Periodic Trends in Chemical Properties of Elements
CHXI03:CLASSIFICATION OF ELEMENTS AND PERIODICITY IN PROPERTIES

313200 \(\mathrm{N}_{0} / 2\) atoms of \(\mathrm{X}(\mathrm{g})\) are converted into \(\mathrm{X}^{+}(\mathrm{g})\) by energy \(\mathrm{E}_{1} \cdot \mathrm{N}_{0} / 2\) atoms of \(\mathrm{X}(\mathrm{g})\) are converted into \(\mathrm{X}^{-}(\mathrm{g})\) of energy \(\mathrm{E}_{2}\). Hence, ionization energy and electron affinity of \(\mathrm{X}(\mathrm{g})\) are:

1 \(\dfrac{2 \mathrm{E}_{1}}{\mathrm{~N}_{0}}, \dfrac{2\left(\mathrm{E}_{1}-\mathrm{E}_{2}\right)}{\mathrm{N}_{0}}\)
2 \(\dfrac{2 \mathrm{E}_{1}}{\mathrm{~N}_{0}}, \dfrac{2 \mathrm{E}_{2}}{\mathrm{~N}_{0}}\)
3 \(\frac{{\left( {{{\text{E}}_{\text{1}}} - {{\text{E}}_{\text{2}}}} \right)}}{{{{\text{N}}_{\text{0}}}}},\frac{{2{{\text{E}}_{\text{2}}}}}{{{{\text{N}}_{\text{0}}}}}\)
4 None of these
CHXI03:CLASSIFICATION OF ELEMENTS AND PERIODICITY IN PROPERTIES

313201 The electron affinity values are negative for
\({\rm{(I)Be}} \to {\rm{B}}{{\rm{e}}^ - }\,\,\,{\rm{(II)N}} \to {{\rm{N}}^ - }\)
\({\rm{(III)O}} \to {{\rm{O}}^{2 - }}\,\,{\rm{(IV)Na}} \to {\rm{N}}{{\rm{a}}^ - }\)
\({\rm{(V)Al}} \to {\rm{A}}{{\rm{l}}^ - }\)
Choose the most appropriate answer from the options given below.

1 (I), (II) and (III) only
2 (IV) and (V) only
3 (I) and (IV) only
4 (I), (II), (IV) and (V) only
CHXI03:CLASSIFICATION OF ELEMENTS AND PERIODICITY IN PROPERTIES

313202 Ionisation of energy of \({{\rm{F}}^{\rm{ - }}}\,\,{\rm{is}}\,\,{\rm{320}}\,{\rm{kJ}}\,{\rm{/}}\,{\rm{mole}}\). The electron gain enthalpy of fluorine would be

1 \({\rm{ - 320}}\,\,{\rm{kJ}}\,{\rm{mo}}{{\rm{l}}^{{\rm{ - 1}}}}\)
2 \({\rm{ - 160}}\,\,{\rm{kJ}}\,{\rm{mo}}{{\rm{l}}^{{\rm{ - 1}}}}\)
3 \({\rm{ + 320}}\,\,{\rm{kJ}}\,{\rm{mo}}{{\rm{l}}^{{\rm{ - 1}}}}\)
4 \({\rm{160}}\,\,{\rm{kJ}}\,{\rm{mo}}{{\rm{l}}^{{\rm{ - 1}}}}\)
CHXI03:CLASSIFICATION OF ELEMENTS AND PERIODICITY IN PROPERTIES

313217 Assertion :
\(\mathrm{F}\) is more electronegative than \(\mathrm{Cl}\).
Reason :
\(\mathrm{F}\) has high electron affinity than \(\mathrm{Cl}\).

1 Both Assertion and Reason are correct and Reason is the correct explanation of the Assertion.
2 Both Assertion and Reason are correct but Reason is not the correct explanation of the Assertion.
3 Assertion is correct but Reason is incorrect.
4 Assertion is incorrect but Reason is correct.
CHXI03:CLASSIFICATION OF ELEMENTS AND PERIODICITY IN PROPERTIES

313238 In the compound \({\rm{M}}\,{\rm{ - }}\,{\rm{O}}\,{\rm{ - }}\,{\rm{H,}}\,\,{\rm{the}}\,\,{\rm{M}}\,{\rm{ - }}\,{\rm{O}}\) bond will be broken if :

1 \({\rm{\Delta }}\left( {{\rm{E}}{\rm{.N}}{\rm{.}}} \right)\,\,{\rm{of}}\,\,{\rm{M}}\,\,{\rm{and}}\,\,{\rm{O < \Delta }}\left( {{\rm{E}}{\rm{.N}}{\rm{.}}} \right)\,\,{\rm{of}}\,\,{\rm{O}}\,\,{\rm{and}}\,\,{\rm{H}}\)
2 \({\rm{\Delta }}\left( {{\rm{E}}{\rm{.N}}{\rm{.}}} \right)\,\,{\rm{of}}\,\,{\rm{M}}\,\,{\rm{and}}\,\,{\rm{O = \Delta }}\left( {{\rm{E}}{\rm{.N}}{\rm{.}}} \right)\,\,{\rm{of}}\,\,{\rm{O}}\,\,{\rm{and}}\,\,{\rm{H}}\)
3 \({\rm{\Delta }}\left( {{\rm{E}}{\rm{.N}}{\rm{.}}} \right)\,\,{\rm{of}}\,\,{\rm{M}}\,\,{\rm{and}}\,\,{\rm{O > \Delta }}\left( {{\rm{E}}{\rm{.N}}{\rm{.}}} \right)\,\,{\rm{of}}\,\,{\rm{O}}\,\,{\rm{and}}\,\,{\rm{H}}\)
4 Cannot be predicted according \({\rm{\Delta }}\left( {{\rm{E}}{\rm{.N}}{\rm{.}}} \right)\) data
CHXI03:CLASSIFICATION OF ELEMENTS AND PERIODICITY IN PROPERTIES

313200 \(\mathrm{N}_{0} / 2\) atoms of \(\mathrm{X}(\mathrm{g})\) are converted into \(\mathrm{X}^{+}(\mathrm{g})\) by energy \(\mathrm{E}_{1} \cdot \mathrm{N}_{0} / 2\) atoms of \(\mathrm{X}(\mathrm{g})\) are converted into \(\mathrm{X}^{-}(\mathrm{g})\) of energy \(\mathrm{E}_{2}\). Hence, ionization energy and electron affinity of \(\mathrm{X}(\mathrm{g})\) are:

1 \(\dfrac{2 \mathrm{E}_{1}}{\mathrm{~N}_{0}}, \dfrac{2\left(\mathrm{E}_{1}-\mathrm{E}_{2}\right)}{\mathrm{N}_{0}}\)
2 \(\dfrac{2 \mathrm{E}_{1}}{\mathrm{~N}_{0}}, \dfrac{2 \mathrm{E}_{2}}{\mathrm{~N}_{0}}\)
3 \(\frac{{\left( {{{\text{E}}_{\text{1}}} - {{\text{E}}_{\text{2}}}} \right)}}{{{{\text{N}}_{\text{0}}}}},\frac{{2{{\text{E}}_{\text{2}}}}}{{{{\text{N}}_{\text{0}}}}}\)
4 None of these
CHXI03:CLASSIFICATION OF ELEMENTS AND PERIODICITY IN PROPERTIES

313201 The electron affinity values are negative for
\({\rm{(I)Be}} \to {\rm{B}}{{\rm{e}}^ - }\,\,\,{\rm{(II)N}} \to {{\rm{N}}^ - }\)
\({\rm{(III)O}} \to {{\rm{O}}^{2 - }}\,\,{\rm{(IV)Na}} \to {\rm{N}}{{\rm{a}}^ - }\)
\({\rm{(V)Al}} \to {\rm{A}}{{\rm{l}}^ - }\)
Choose the most appropriate answer from the options given below.

1 (I), (II) and (III) only
2 (IV) and (V) only
3 (I) and (IV) only
4 (I), (II), (IV) and (V) only
CHXI03:CLASSIFICATION OF ELEMENTS AND PERIODICITY IN PROPERTIES

313202 Ionisation of energy of \({{\rm{F}}^{\rm{ - }}}\,\,{\rm{is}}\,\,{\rm{320}}\,{\rm{kJ}}\,{\rm{/}}\,{\rm{mole}}\). The electron gain enthalpy of fluorine would be

1 \({\rm{ - 320}}\,\,{\rm{kJ}}\,{\rm{mo}}{{\rm{l}}^{{\rm{ - 1}}}}\)
2 \({\rm{ - 160}}\,\,{\rm{kJ}}\,{\rm{mo}}{{\rm{l}}^{{\rm{ - 1}}}}\)
3 \({\rm{ + 320}}\,\,{\rm{kJ}}\,{\rm{mo}}{{\rm{l}}^{{\rm{ - 1}}}}\)
4 \({\rm{160}}\,\,{\rm{kJ}}\,{\rm{mo}}{{\rm{l}}^{{\rm{ - 1}}}}\)
CHXI03:CLASSIFICATION OF ELEMENTS AND PERIODICITY IN PROPERTIES

313217 Assertion :
\(\mathrm{F}\) is more electronegative than \(\mathrm{Cl}\).
Reason :
\(\mathrm{F}\) has high electron affinity than \(\mathrm{Cl}\).

1 Both Assertion and Reason are correct and Reason is the correct explanation of the Assertion.
2 Both Assertion and Reason are correct but Reason is not the correct explanation of the Assertion.
3 Assertion is correct but Reason is incorrect.
4 Assertion is incorrect but Reason is correct.
CHXI03:CLASSIFICATION OF ELEMENTS AND PERIODICITY IN PROPERTIES

313238 In the compound \({\rm{M}}\,{\rm{ - }}\,{\rm{O}}\,{\rm{ - }}\,{\rm{H,}}\,\,{\rm{the}}\,\,{\rm{M}}\,{\rm{ - }}\,{\rm{O}}\) bond will be broken if :

1 \({\rm{\Delta }}\left( {{\rm{E}}{\rm{.N}}{\rm{.}}} \right)\,\,{\rm{of}}\,\,{\rm{M}}\,\,{\rm{and}}\,\,{\rm{O < \Delta }}\left( {{\rm{E}}{\rm{.N}}{\rm{.}}} \right)\,\,{\rm{of}}\,\,{\rm{O}}\,\,{\rm{and}}\,\,{\rm{H}}\)
2 \({\rm{\Delta }}\left( {{\rm{E}}{\rm{.N}}{\rm{.}}} \right)\,\,{\rm{of}}\,\,{\rm{M}}\,\,{\rm{and}}\,\,{\rm{O = \Delta }}\left( {{\rm{E}}{\rm{.N}}{\rm{.}}} \right)\,\,{\rm{of}}\,\,{\rm{O}}\,\,{\rm{and}}\,\,{\rm{H}}\)
3 \({\rm{\Delta }}\left( {{\rm{E}}{\rm{.N}}{\rm{.}}} \right)\,\,{\rm{of}}\,\,{\rm{M}}\,\,{\rm{and}}\,\,{\rm{O > \Delta }}\left( {{\rm{E}}{\rm{.N}}{\rm{.}}} \right)\,\,{\rm{of}}\,\,{\rm{O}}\,\,{\rm{and}}\,\,{\rm{H}}\)
4 Cannot be predicted according \({\rm{\Delta }}\left( {{\rm{E}}{\rm{.N}}{\rm{.}}} \right)\) data
CHXI03:CLASSIFICATION OF ELEMENTS AND PERIODICITY IN PROPERTIES

313200 \(\mathrm{N}_{0} / 2\) atoms of \(\mathrm{X}(\mathrm{g})\) are converted into \(\mathrm{X}^{+}(\mathrm{g})\) by energy \(\mathrm{E}_{1} \cdot \mathrm{N}_{0} / 2\) atoms of \(\mathrm{X}(\mathrm{g})\) are converted into \(\mathrm{X}^{-}(\mathrm{g})\) of energy \(\mathrm{E}_{2}\). Hence, ionization energy and electron affinity of \(\mathrm{X}(\mathrm{g})\) are:

1 \(\dfrac{2 \mathrm{E}_{1}}{\mathrm{~N}_{0}}, \dfrac{2\left(\mathrm{E}_{1}-\mathrm{E}_{2}\right)}{\mathrm{N}_{0}}\)
2 \(\dfrac{2 \mathrm{E}_{1}}{\mathrm{~N}_{0}}, \dfrac{2 \mathrm{E}_{2}}{\mathrm{~N}_{0}}\)
3 \(\frac{{\left( {{{\text{E}}_{\text{1}}} - {{\text{E}}_{\text{2}}}} \right)}}{{{{\text{N}}_{\text{0}}}}},\frac{{2{{\text{E}}_{\text{2}}}}}{{{{\text{N}}_{\text{0}}}}}\)
4 None of these
CHXI03:CLASSIFICATION OF ELEMENTS AND PERIODICITY IN PROPERTIES

313201 The electron affinity values are negative for
\({\rm{(I)Be}} \to {\rm{B}}{{\rm{e}}^ - }\,\,\,{\rm{(II)N}} \to {{\rm{N}}^ - }\)
\({\rm{(III)O}} \to {{\rm{O}}^{2 - }}\,\,{\rm{(IV)Na}} \to {\rm{N}}{{\rm{a}}^ - }\)
\({\rm{(V)Al}} \to {\rm{A}}{{\rm{l}}^ - }\)
Choose the most appropriate answer from the options given below.

1 (I), (II) and (III) only
2 (IV) and (V) only
3 (I) and (IV) only
4 (I), (II), (IV) and (V) only
CHXI03:CLASSIFICATION OF ELEMENTS AND PERIODICITY IN PROPERTIES

313202 Ionisation of energy of \({{\rm{F}}^{\rm{ - }}}\,\,{\rm{is}}\,\,{\rm{320}}\,{\rm{kJ}}\,{\rm{/}}\,{\rm{mole}}\). The electron gain enthalpy of fluorine would be

1 \({\rm{ - 320}}\,\,{\rm{kJ}}\,{\rm{mo}}{{\rm{l}}^{{\rm{ - 1}}}}\)
2 \({\rm{ - 160}}\,\,{\rm{kJ}}\,{\rm{mo}}{{\rm{l}}^{{\rm{ - 1}}}}\)
3 \({\rm{ + 320}}\,\,{\rm{kJ}}\,{\rm{mo}}{{\rm{l}}^{{\rm{ - 1}}}}\)
4 \({\rm{160}}\,\,{\rm{kJ}}\,{\rm{mo}}{{\rm{l}}^{{\rm{ - 1}}}}\)
CHXI03:CLASSIFICATION OF ELEMENTS AND PERIODICITY IN PROPERTIES

313217 Assertion :
\(\mathrm{F}\) is more electronegative than \(\mathrm{Cl}\).
Reason :
\(\mathrm{F}\) has high electron affinity than \(\mathrm{Cl}\).

1 Both Assertion and Reason are correct and Reason is the correct explanation of the Assertion.
2 Both Assertion and Reason are correct but Reason is not the correct explanation of the Assertion.
3 Assertion is correct but Reason is incorrect.
4 Assertion is incorrect but Reason is correct.
CHXI03:CLASSIFICATION OF ELEMENTS AND PERIODICITY IN PROPERTIES

313238 In the compound \({\rm{M}}\,{\rm{ - }}\,{\rm{O}}\,{\rm{ - }}\,{\rm{H,}}\,\,{\rm{the}}\,\,{\rm{M}}\,{\rm{ - }}\,{\rm{O}}\) bond will be broken if :

1 \({\rm{\Delta }}\left( {{\rm{E}}{\rm{.N}}{\rm{.}}} \right)\,\,{\rm{of}}\,\,{\rm{M}}\,\,{\rm{and}}\,\,{\rm{O < \Delta }}\left( {{\rm{E}}{\rm{.N}}{\rm{.}}} \right)\,\,{\rm{of}}\,\,{\rm{O}}\,\,{\rm{and}}\,\,{\rm{H}}\)
2 \({\rm{\Delta }}\left( {{\rm{E}}{\rm{.N}}{\rm{.}}} \right)\,\,{\rm{of}}\,\,{\rm{M}}\,\,{\rm{and}}\,\,{\rm{O = \Delta }}\left( {{\rm{E}}{\rm{.N}}{\rm{.}}} \right)\,\,{\rm{of}}\,\,{\rm{O}}\,\,{\rm{and}}\,\,{\rm{H}}\)
3 \({\rm{\Delta }}\left( {{\rm{E}}{\rm{.N}}{\rm{.}}} \right)\,\,{\rm{of}}\,\,{\rm{M}}\,\,{\rm{and}}\,\,{\rm{O > \Delta }}\left( {{\rm{E}}{\rm{.N}}{\rm{.}}} \right)\,\,{\rm{of}}\,\,{\rm{O}}\,\,{\rm{and}}\,\,{\rm{H}}\)
4 Cannot be predicted according \({\rm{\Delta }}\left( {{\rm{E}}{\rm{.N}}{\rm{.}}} \right)\) data
CHXI03:CLASSIFICATION OF ELEMENTS AND PERIODICITY IN PROPERTIES

313200 \(\mathrm{N}_{0} / 2\) atoms of \(\mathrm{X}(\mathrm{g})\) are converted into \(\mathrm{X}^{+}(\mathrm{g})\) by energy \(\mathrm{E}_{1} \cdot \mathrm{N}_{0} / 2\) atoms of \(\mathrm{X}(\mathrm{g})\) are converted into \(\mathrm{X}^{-}(\mathrm{g})\) of energy \(\mathrm{E}_{2}\). Hence, ionization energy and electron affinity of \(\mathrm{X}(\mathrm{g})\) are:

1 \(\dfrac{2 \mathrm{E}_{1}}{\mathrm{~N}_{0}}, \dfrac{2\left(\mathrm{E}_{1}-\mathrm{E}_{2}\right)}{\mathrm{N}_{0}}\)
2 \(\dfrac{2 \mathrm{E}_{1}}{\mathrm{~N}_{0}}, \dfrac{2 \mathrm{E}_{2}}{\mathrm{~N}_{0}}\)
3 \(\frac{{\left( {{{\text{E}}_{\text{1}}} - {{\text{E}}_{\text{2}}}} \right)}}{{{{\text{N}}_{\text{0}}}}},\frac{{2{{\text{E}}_{\text{2}}}}}{{{{\text{N}}_{\text{0}}}}}\)
4 None of these
CHXI03:CLASSIFICATION OF ELEMENTS AND PERIODICITY IN PROPERTIES

313201 The electron affinity values are negative for
\({\rm{(I)Be}} \to {\rm{B}}{{\rm{e}}^ - }\,\,\,{\rm{(II)N}} \to {{\rm{N}}^ - }\)
\({\rm{(III)O}} \to {{\rm{O}}^{2 - }}\,\,{\rm{(IV)Na}} \to {\rm{N}}{{\rm{a}}^ - }\)
\({\rm{(V)Al}} \to {\rm{A}}{{\rm{l}}^ - }\)
Choose the most appropriate answer from the options given below.

1 (I), (II) and (III) only
2 (IV) and (V) only
3 (I) and (IV) only
4 (I), (II), (IV) and (V) only
CHXI03:CLASSIFICATION OF ELEMENTS AND PERIODICITY IN PROPERTIES

313202 Ionisation of energy of \({{\rm{F}}^{\rm{ - }}}\,\,{\rm{is}}\,\,{\rm{320}}\,{\rm{kJ}}\,{\rm{/}}\,{\rm{mole}}\). The electron gain enthalpy of fluorine would be

1 \({\rm{ - 320}}\,\,{\rm{kJ}}\,{\rm{mo}}{{\rm{l}}^{{\rm{ - 1}}}}\)
2 \({\rm{ - 160}}\,\,{\rm{kJ}}\,{\rm{mo}}{{\rm{l}}^{{\rm{ - 1}}}}\)
3 \({\rm{ + 320}}\,\,{\rm{kJ}}\,{\rm{mo}}{{\rm{l}}^{{\rm{ - 1}}}}\)
4 \({\rm{160}}\,\,{\rm{kJ}}\,{\rm{mo}}{{\rm{l}}^{{\rm{ - 1}}}}\)
CHXI03:CLASSIFICATION OF ELEMENTS AND PERIODICITY IN PROPERTIES

313217 Assertion :
\(\mathrm{F}\) is more electronegative than \(\mathrm{Cl}\).
Reason :
\(\mathrm{F}\) has high electron affinity than \(\mathrm{Cl}\).

1 Both Assertion and Reason are correct and Reason is the correct explanation of the Assertion.
2 Both Assertion and Reason are correct but Reason is not the correct explanation of the Assertion.
3 Assertion is correct but Reason is incorrect.
4 Assertion is incorrect but Reason is correct.
CHXI03:CLASSIFICATION OF ELEMENTS AND PERIODICITY IN PROPERTIES

313238 In the compound \({\rm{M}}\,{\rm{ - }}\,{\rm{O}}\,{\rm{ - }}\,{\rm{H,}}\,\,{\rm{the}}\,\,{\rm{M}}\,{\rm{ - }}\,{\rm{O}}\) bond will be broken if :

1 \({\rm{\Delta }}\left( {{\rm{E}}{\rm{.N}}{\rm{.}}} \right)\,\,{\rm{of}}\,\,{\rm{M}}\,\,{\rm{and}}\,\,{\rm{O < \Delta }}\left( {{\rm{E}}{\rm{.N}}{\rm{.}}} \right)\,\,{\rm{of}}\,\,{\rm{O}}\,\,{\rm{and}}\,\,{\rm{H}}\)
2 \({\rm{\Delta }}\left( {{\rm{E}}{\rm{.N}}{\rm{.}}} \right)\,\,{\rm{of}}\,\,{\rm{M}}\,\,{\rm{and}}\,\,{\rm{O = \Delta }}\left( {{\rm{E}}{\rm{.N}}{\rm{.}}} \right)\,\,{\rm{of}}\,\,{\rm{O}}\,\,{\rm{and}}\,\,{\rm{H}}\)
3 \({\rm{\Delta }}\left( {{\rm{E}}{\rm{.N}}{\rm{.}}} \right)\,\,{\rm{of}}\,\,{\rm{M}}\,\,{\rm{and}}\,\,{\rm{O > \Delta }}\left( {{\rm{E}}{\rm{.N}}{\rm{.}}} \right)\,\,{\rm{of}}\,\,{\rm{O}}\,\,{\rm{and}}\,\,{\rm{H}}\)
4 Cannot be predicted according \({\rm{\Delta }}\left( {{\rm{E}}{\rm{.N}}{\rm{.}}} \right)\) data
CHXI03:CLASSIFICATION OF ELEMENTS AND PERIODICITY IN PROPERTIES

313200 \(\mathrm{N}_{0} / 2\) atoms of \(\mathrm{X}(\mathrm{g})\) are converted into \(\mathrm{X}^{+}(\mathrm{g})\) by energy \(\mathrm{E}_{1} \cdot \mathrm{N}_{0} / 2\) atoms of \(\mathrm{X}(\mathrm{g})\) are converted into \(\mathrm{X}^{-}(\mathrm{g})\) of energy \(\mathrm{E}_{2}\). Hence, ionization energy and electron affinity of \(\mathrm{X}(\mathrm{g})\) are:

1 \(\dfrac{2 \mathrm{E}_{1}}{\mathrm{~N}_{0}}, \dfrac{2\left(\mathrm{E}_{1}-\mathrm{E}_{2}\right)}{\mathrm{N}_{0}}\)
2 \(\dfrac{2 \mathrm{E}_{1}}{\mathrm{~N}_{0}}, \dfrac{2 \mathrm{E}_{2}}{\mathrm{~N}_{0}}\)
3 \(\frac{{\left( {{{\text{E}}_{\text{1}}} - {{\text{E}}_{\text{2}}}} \right)}}{{{{\text{N}}_{\text{0}}}}},\frac{{2{{\text{E}}_{\text{2}}}}}{{{{\text{N}}_{\text{0}}}}}\)
4 None of these
CHXI03:CLASSIFICATION OF ELEMENTS AND PERIODICITY IN PROPERTIES

313201 The electron affinity values are negative for
\({\rm{(I)Be}} \to {\rm{B}}{{\rm{e}}^ - }\,\,\,{\rm{(II)N}} \to {{\rm{N}}^ - }\)
\({\rm{(III)O}} \to {{\rm{O}}^{2 - }}\,\,{\rm{(IV)Na}} \to {\rm{N}}{{\rm{a}}^ - }\)
\({\rm{(V)Al}} \to {\rm{A}}{{\rm{l}}^ - }\)
Choose the most appropriate answer from the options given below.

1 (I), (II) and (III) only
2 (IV) and (V) only
3 (I) and (IV) only
4 (I), (II), (IV) and (V) only
CHXI03:CLASSIFICATION OF ELEMENTS AND PERIODICITY IN PROPERTIES

313202 Ionisation of energy of \({{\rm{F}}^{\rm{ - }}}\,\,{\rm{is}}\,\,{\rm{320}}\,{\rm{kJ}}\,{\rm{/}}\,{\rm{mole}}\). The electron gain enthalpy of fluorine would be

1 \({\rm{ - 320}}\,\,{\rm{kJ}}\,{\rm{mo}}{{\rm{l}}^{{\rm{ - 1}}}}\)
2 \({\rm{ - 160}}\,\,{\rm{kJ}}\,{\rm{mo}}{{\rm{l}}^{{\rm{ - 1}}}}\)
3 \({\rm{ + 320}}\,\,{\rm{kJ}}\,{\rm{mo}}{{\rm{l}}^{{\rm{ - 1}}}}\)
4 \({\rm{160}}\,\,{\rm{kJ}}\,{\rm{mo}}{{\rm{l}}^{{\rm{ - 1}}}}\)
CHXI03:CLASSIFICATION OF ELEMENTS AND PERIODICITY IN PROPERTIES

313217 Assertion :
\(\mathrm{F}\) is more electronegative than \(\mathrm{Cl}\).
Reason :
\(\mathrm{F}\) has high electron affinity than \(\mathrm{Cl}\).

1 Both Assertion and Reason are correct and Reason is the correct explanation of the Assertion.
2 Both Assertion and Reason are correct but Reason is not the correct explanation of the Assertion.
3 Assertion is correct but Reason is incorrect.
4 Assertion is incorrect but Reason is correct.
CHXI03:CLASSIFICATION OF ELEMENTS AND PERIODICITY IN PROPERTIES

313238 In the compound \({\rm{M}}\,{\rm{ - }}\,{\rm{O}}\,{\rm{ - }}\,{\rm{H,}}\,\,{\rm{the}}\,\,{\rm{M}}\,{\rm{ - }}\,{\rm{O}}\) bond will be broken if :

1 \({\rm{\Delta }}\left( {{\rm{E}}{\rm{.N}}{\rm{.}}} \right)\,\,{\rm{of}}\,\,{\rm{M}}\,\,{\rm{and}}\,\,{\rm{O < \Delta }}\left( {{\rm{E}}{\rm{.N}}{\rm{.}}} \right)\,\,{\rm{of}}\,\,{\rm{O}}\,\,{\rm{and}}\,\,{\rm{H}}\)
2 \({\rm{\Delta }}\left( {{\rm{E}}{\rm{.N}}{\rm{.}}} \right)\,\,{\rm{of}}\,\,{\rm{M}}\,\,{\rm{and}}\,\,{\rm{O = \Delta }}\left( {{\rm{E}}{\rm{.N}}{\rm{.}}} \right)\,\,{\rm{of}}\,\,{\rm{O}}\,\,{\rm{and}}\,\,{\rm{H}}\)
3 \({\rm{\Delta }}\left( {{\rm{E}}{\rm{.N}}{\rm{.}}} \right)\,\,{\rm{of}}\,\,{\rm{M}}\,\,{\rm{and}}\,\,{\rm{O > \Delta }}\left( {{\rm{E}}{\rm{.N}}{\rm{.}}} \right)\,\,{\rm{of}}\,\,{\rm{O}}\,\,{\rm{and}}\,\,{\rm{H}}\)
4 Cannot be predicted according \({\rm{\Delta }}\left( {{\rm{E}}{\rm{.N}}{\rm{.}}} \right)\) data