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

313336 The first \({\rm{(I}}{{\rm{E}}_{\rm{1}}}{\rm{)}}\,\,{\rm{and}}\,\,{\rm{second}}\,\,{\rm{(I}}{{\rm{E}}_{\rm{2}}}{\rm{)}}\) ionisation energies (kJ/mol) of a few elements designated by Roman numerals are given below. Which of these would be an alkali metal?

1 \({\rm{I}}\,\,\,\,\,\,\,\,\,{\rm{(I}}{{\rm{E}}_{\rm{1}}}{\rm{)}}\,\,{\rm{ - }}\,\,{\rm{2372,}}\,\,{\rm{(I}}{{\rm{E}}_{\rm{2}}}{\rm{)}}\,\,{\rm{ - }}\,\,{\rm{5251}}\)
2 \({\rm{II}}\,\,\,\,\,\,\,{\rm{(I}}{{\rm{E}}_{\rm{1}}}{\rm{)}}\,\,{\rm{ - }}\,\,{\rm{520,}}\,\,\,\,\,{\rm{(I}}{{\rm{E}}_{\rm{2}}}{\rm{)}}\,\,{\rm{ - }}\,\,{\rm{7300}}\)
3 \({\rm{III}}\,\,\,\,\,{\rm{(I}}{{\rm{E}}_{\rm{1}}}{\rm{)}}\,\,{\rm{ - }}\,\,{\rm{900,}}\,\,\,\,\,{\rm{(I}}{{\rm{E}}_{\rm{2}}}{\rm{)}}\,\,{\rm{ - }}\,\,{\rm{1760}}\)
4 \({\rm{IV}}\,\,\,\,{\rm{(I}}{{\rm{E}}_{\rm{1}}}{\rm{)}}\,\,{\rm{ - }}\,\,{\rm{1680,}}\,\,\,{\rm{(I}}{{\rm{E}}_{\rm{2}}}{\rm{)}}\,\,{\rm{ - }}\,\,{\rm{3380}}\)
CHXI03:CLASSIFICATION OF ELEMENTS AND PERIODICITY IN PROPERTIES

313337 \({{\rm{X}}_{\left( {\rm{g}} \right)}} \to {{\rm{X}}^{\rm{ + }}}\left( {\rm{g}} \right){\rm{ + }}{{\rm{e}}^{\rm{ - }}}{\rm{,}}\,\,\,{\rm{\Delta H = + 720kJ}}\,{\rm{mo}}{{\rm{l}}^{{\rm{ - 1}}}}\)
Calculate the amount of energy required to convert 110 mg of ‘X’ atom in gaseous state into \({{\rm{X}}^{\rm{ + }}}\) ion. (Atomic wt. for X = 7 g/mol)

1 10.4kJ
2 12.3kJ
3 11.3kJ
4 14.5kJ
CHXI03:CLASSIFICATION OF ELEMENTS AND PERIODICITY IN PROPERTIES

313338 Among the following elements, the one that has the lowest ionisation energy is

1 Argon
2 Magnesium
3 Sodium
4 Lithium
CHXI03:CLASSIFICATION OF ELEMENTS AND PERIODICITY IN PROPERTIES

313339 \({\rm{M(g)}} \to {{\rm{M}}^{\rm{ + }}}{\rm{(g) + }}{{\rm{e}}^{\rm{ - }}}{\rm{, \Delta H = 100}}\;{\rm{eV}}\)
\({{\rm{M}}^{\rm{ + }}}{\rm{(g)}} \to {{\rm{M}}^{{\rm{2 + }}}}{\rm{(g) + }}{{\rm{e}}^{\rm{ - }}}{\rm{, \Delta H = 250eV}}\)
Which is an incorrect statement?

1 \({\rm{I}}{{\rm{E}}_{\rm{1}}}\,\,{\rm{of}}\,\,{\rm{M}}\,{\rm{(g)}}\,\,{\rm{is}}\,\,{\rm{100}}\,\,{\rm{e}}\,{\rm{V}}\)
2 \({\rm{I}}{{\rm{E}}_{\rm{1}}}\,\,{\rm{of}}\,\,{{\rm{M}}^{\rm{ + }}}{\rm{(g)}}\,\,{\rm{is}}\,\,{\rm{150}}\,\,{\rm{e}}\,{\rm{V}}\)
3 \({\rm{I}}{{\rm{E}}_{\rm{2}}}\,\,{\rm{of}}\,\,{\rm{M}}\,{\rm{(g)}}\,\,{\rm{is}}\,\,{\rm{250}}\,\,{\rm{e}}\,{\rm{V}}\)
4 \({\rm{I}}{{\rm{E}}_{\rm{2}}}\,\,{\rm{of}}\,\,{\rm{M}}\,{\rm{(g)}}\,\,{\rm{is}}\,\,{\rm{150}}\,\,{\rm{e}}\,{\rm{V}}\)
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CHXI03:CLASSIFICATION OF ELEMENTS AND PERIODICITY IN PROPERTIES

313336 The first \({\rm{(I}}{{\rm{E}}_{\rm{1}}}{\rm{)}}\,\,{\rm{and}}\,\,{\rm{second}}\,\,{\rm{(I}}{{\rm{E}}_{\rm{2}}}{\rm{)}}\) ionisation energies (kJ/mol) of a few elements designated by Roman numerals are given below. Which of these would be an alkali metal?

1 \({\rm{I}}\,\,\,\,\,\,\,\,\,{\rm{(I}}{{\rm{E}}_{\rm{1}}}{\rm{)}}\,\,{\rm{ - }}\,\,{\rm{2372,}}\,\,{\rm{(I}}{{\rm{E}}_{\rm{2}}}{\rm{)}}\,\,{\rm{ - }}\,\,{\rm{5251}}\)
2 \({\rm{II}}\,\,\,\,\,\,\,{\rm{(I}}{{\rm{E}}_{\rm{1}}}{\rm{)}}\,\,{\rm{ - }}\,\,{\rm{520,}}\,\,\,\,\,{\rm{(I}}{{\rm{E}}_{\rm{2}}}{\rm{)}}\,\,{\rm{ - }}\,\,{\rm{7300}}\)
3 \({\rm{III}}\,\,\,\,\,{\rm{(I}}{{\rm{E}}_{\rm{1}}}{\rm{)}}\,\,{\rm{ - }}\,\,{\rm{900,}}\,\,\,\,\,{\rm{(I}}{{\rm{E}}_{\rm{2}}}{\rm{)}}\,\,{\rm{ - }}\,\,{\rm{1760}}\)
4 \({\rm{IV}}\,\,\,\,{\rm{(I}}{{\rm{E}}_{\rm{1}}}{\rm{)}}\,\,{\rm{ - }}\,\,{\rm{1680,}}\,\,\,{\rm{(I}}{{\rm{E}}_{\rm{2}}}{\rm{)}}\,\,{\rm{ - }}\,\,{\rm{3380}}\)
CHXI03:CLASSIFICATION OF ELEMENTS AND PERIODICITY IN PROPERTIES

313337 \({{\rm{X}}_{\left( {\rm{g}} \right)}} \to {{\rm{X}}^{\rm{ + }}}\left( {\rm{g}} \right){\rm{ + }}{{\rm{e}}^{\rm{ - }}}{\rm{,}}\,\,\,{\rm{\Delta H = + 720kJ}}\,{\rm{mo}}{{\rm{l}}^{{\rm{ - 1}}}}\)
Calculate the amount of energy required to convert 110 mg of ‘X’ atom in gaseous state into \({{\rm{X}}^{\rm{ + }}}\) ion. (Atomic wt. for X = 7 g/mol)

1 10.4kJ
2 12.3kJ
3 11.3kJ
4 14.5kJ
CHXI03:CLASSIFICATION OF ELEMENTS AND PERIODICITY IN PROPERTIES

313338 Among the following elements, the one that has the lowest ionisation energy is

1 Argon
2 Magnesium
3 Sodium
4 Lithium
CHXI03:CLASSIFICATION OF ELEMENTS AND PERIODICITY IN PROPERTIES

313339 \({\rm{M(g)}} \to {{\rm{M}}^{\rm{ + }}}{\rm{(g) + }}{{\rm{e}}^{\rm{ - }}}{\rm{, \Delta H = 100}}\;{\rm{eV}}\)
\({{\rm{M}}^{\rm{ + }}}{\rm{(g)}} \to {{\rm{M}}^{{\rm{2 + }}}}{\rm{(g) + }}{{\rm{e}}^{\rm{ - }}}{\rm{, \Delta H = 250eV}}\)
Which is an incorrect statement?

1 \({\rm{I}}{{\rm{E}}_{\rm{1}}}\,\,{\rm{of}}\,\,{\rm{M}}\,{\rm{(g)}}\,\,{\rm{is}}\,\,{\rm{100}}\,\,{\rm{e}}\,{\rm{V}}\)
2 \({\rm{I}}{{\rm{E}}_{\rm{1}}}\,\,{\rm{of}}\,\,{{\rm{M}}^{\rm{ + }}}{\rm{(g)}}\,\,{\rm{is}}\,\,{\rm{150}}\,\,{\rm{e}}\,{\rm{V}}\)
3 \({\rm{I}}{{\rm{E}}_{\rm{2}}}\,\,{\rm{of}}\,\,{\rm{M}}\,{\rm{(g)}}\,\,{\rm{is}}\,\,{\rm{250}}\,\,{\rm{e}}\,{\rm{V}}\)
4 \({\rm{I}}{{\rm{E}}_{\rm{2}}}\,\,{\rm{of}}\,\,{\rm{M}}\,{\rm{(g)}}\,\,{\rm{is}}\,\,{\rm{150}}\,\,{\rm{e}}\,{\rm{V}}\)
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CHXI03:CLASSIFICATION OF ELEMENTS AND PERIODICITY IN PROPERTIES

313336 The first \({\rm{(I}}{{\rm{E}}_{\rm{1}}}{\rm{)}}\,\,{\rm{and}}\,\,{\rm{second}}\,\,{\rm{(I}}{{\rm{E}}_{\rm{2}}}{\rm{)}}\) ionisation energies (kJ/mol) of a few elements designated by Roman numerals are given below. Which of these would be an alkali metal?

1 \({\rm{I}}\,\,\,\,\,\,\,\,\,{\rm{(I}}{{\rm{E}}_{\rm{1}}}{\rm{)}}\,\,{\rm{ - }}\,\,{\rm{2372,}}\,\,{\rm{(I}}{{\rm{E}}_{\rm{2}}}{\rm{)}}\,\,{\rm{ - }}\,\,{\rm{5251}}\)
2 \({\rm{II}}\,\,\,\,\,\,\,{\rm{(I}}{{\rm{E}}_{\rm{1}}}{\rm{)}}\,\,{\rm{ - }}\,\,{\rm{520,}}\,\,\,\,\,{\rm{(I}}{{\rm{E}}_{\rm{2}}}{\rm{)}}\,\,{\rm{ - }}\,\,{\rm{7300}}\)
3 \({\rm{III}}\,\,\,\,\,{\rm{(I}}{{\rm{E}}_{\rm{1}}}{\rm{)}}\,\,{\rm{ - }}\,\,{\rm{900,}}\,\,\,\,\,{\rm{(I}}{{\rm{E}}_{\rm{2}}}{\rm{)}}\,\,{\rm{ - }}\,\,{\rm{1760}}\)
4 \({\rm{IV}}\,\,\,\,{\rm{(I}}{{\rm{E}}_{\rm{1}}}{\rm{)}}\,\,{\rm{ - }}\,\,{\rm{1680,}}\,\,\,{\rm{(I}}{{\rm{E}}_{\rm{2}}}{\rm{)}}\,\,{\rm{ - }}\,\,{\rm{3380}}\)
CHXI03:CLASSIFICATION OF ELEMENTS AND PERIODICITY IN PROPERTIES

313337 \({{\rm{X}}_{\left( {\rm{g}} \right)}} \to {{\rm{X}}^{\rm{ + }}}\left( {\rm{g}} \right){\rm{ + }}{{\rm{e}}^{\rm{ - }}}{\rm{,}}\,\,\,{\rm{\Delta H = + 720kJ}}\,{\rm{mo}}{{\rm{l}}^{{\rm{ - 1}}}}\)
Calculate the amount of energy required to convert 110 mg of ‘X’ atom in gaseous state into \({{\rm{X}}^{\rm{ + }}}\) ion. (Atomic wt. for X = 7 g/mol)

1 10.4kJ
2 12.3kJ
3 11.3kJ
4 14.5kJ
CHXI03:CLASSIFICATION OF ELEMENTS AND PERIODICITY IN PROPERTIES

313338 Among the following elements, the one that has the lowest ionisation energy is

1 Argon
2 Magnesium
3 Sodium
4 Lithium
CHXI03:CLASSIFICATION OF ELEMENTS AND PERIODICITY IN PROPERTIES

313339 \({\rm{M(g)}} \to {{\rm{M}}^{\rm{ + }}}{\rm{(g) + }}{{\rm{e}}^{\rm{ - }}}{\rm{, \Delta H = 100}}\;{\rm{eV}}\)
\({{\rm{M}}^{\rm{ + }}}{\rm{(g)}} \to {{\rm{M}}^{{\rm{2 + }}}}{\rm{(g) + }}{{\rm{e}}^{\rm{ - }}}{\rm{, \Delta H = 250eV}}\)
Which is an incorrect statement?

1 \({\rm{I}}{{\rm{E}}_{\rm{1}}}\,\,{\rm{of}}\,\,{\rm{M}}\,{\rm{(g)}}\,\,{\rm{is}}\,\,{\rm{100}}\,\,{\rm{e}}\,{\rm{V}}\)
2 \({\rm{I}}{{\rm{E}}_{\rm{1}}}\,\,{\rm{of}}\,\,{{\rm{M}}^{\rm{ + }}}{\rm{(g)}}\,\,{\rm{is}}\,\,{\rm{150}}\,\,{\rm{e}}\,{\rm{V}}\)
3 \({\rm{I}}{{\rm{E}}_{\rm{2}}}\,\,{\rm{of}}\,\,{\rm{M}}\,{\rm{(g)}}\,\,{\rm{is}}\,\,{\rm{250}}\,\,{\rm{e}}\,{\rm{V}}\)
4 \({\rm{I}}{{\rm{E}}_{\rm{2}}}\,\,{\rm{of}}\,\,{\rm{M}}\,{\rm{(g)}}\,\,{\rm{is}}\,\,{\rm{150}}\,\,{\rm{e}}\,{\rm{V}}\)
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CHXI03:CLASSIFICATION OF ELEMENTS AND PERIODICITY IN PROPERTIES

313336 The first \({\rm{(I}}{{\rm{E}}_{\rm{1}}}{\rm{)}}\,\,{\rm{and}}\,\,{\rm{second}}\,\,{\rm{(I}}{{\rm{E}}_{\rm{2}}}{\rm{)}}\) ionisation energies (kJ/mol) of a few elements designated by Roman numerals are given below. Which of these would be an alkali metal?

1 \({\rm{I}}\,\,\,\,\,\,\,\,\,{\rm{(I}}{{\rm{E}}_{\rm{1}}}{\rm{)}}\,\,{\rm{ - }}\,\,{\rm{2372,}}\,\,{\rm{(I}}{{\rm{E}}_{\rm{2}}}{\rm{)}}\,\,{\rm{ - }}\,\,{\rm{5251}}\)
2 \({\rm{II}}\,\,\,\,\,\,\,{\rm{(I}}{{\rm{E}}_{\rm{1}}}{\rm{)}}\,\,{\rm{ - }}\,\,{\rm{520,}}\,\,\,\,\,{\rm{(I}}{{\rm{E}}_{\rm{2}}}{\rm{)}}\,\,{\rm{ - }}\,\,{\rm{7300}}\)
3 \({\rm{III}}\,\,\,\,\,{\rm{(I}}{{\rm{E}}_{\rm{1}}}{\rm{)}}\,\,{\rm{ - }}\,\,{\rm{900,}}\,\,\,\,\,{\rm{(I}}{{\rm{E}}_{\rm{2}}}{\rm{)}}\,\,{\rm{ - }}\,\,{\rm{1760}}\)
4 \({\rm{IV}}\,\,\,\,{\rm{(I}}{{\rm{E}}_{\rm{1}}}{\rm{)}}\,\,{\rm{ - }}\,\,{\rm{1680,}}\,\,\,{\rm{(I}}{{\rm{E}}_{\rm{2}}}{\rm{)}}\,\,{\rm{ - }}\,\,{\rm{3380}}\)
CHXI03:CLASSIFICATION OF ELEMENTS AND PERIODICITY IN PROPERTIES

313337 \({{\rm{X}}_{\left( {\rm{g}} \right)}} \to {{\rm{X}}^{\rm{ + }}}\left( {\rm{g}} \right){\rm{ + }}{{\rm{e}}^{\rm{ - }}}{\rm{,}}\,\,\,{\rm{\Delta H = + 720kJ}}\,{\rm{mo}}{{\rm{l}}^{{\rm{ - 1}}}}\)
Calculate the amount of energy required to convert 110 mg of ‘X’ atom in gaseous state into \({{\rm{X}}^{\rm{ + }}}\) ion. (Atomic wt. for X = 7 g/mol)

1 10.4kJ
2 12.3kJ
3 11.3kJ
4 14.5kJ
CHXI03:CLASSIFICATION OF ELEMENTS AND PERIODICITY IN PROPERTIES

313338 Among the following elements, the one that has the lowest ionisation energy is

1 Argon
2 Magnesium
3 Sodium
4 Lithium
CHXI03:CLASSIFICATION OF ELEMENTS AND PERIODICITY IN PROPERTIES

313339 \({\rm{M(g)}} \to {{\rm{M}}^{\rm{ + }}}{\rm{(g) + }}{{\rm{e}}^{\rm{ - }}}{\rm{, \Delta H = 100}}\;{\rm{eV}}\)
\({{\rm{M}}^{\rm{ + }}}{\rm{(g)}} \to {{\rm{M}}^{{\rm{2 + }}}}{\rm{(g) + }}{{\rm{e}}^{\rm{ - }}}{\rm{, \Delta H = 250eV}}\)
Which is an incorrect statement?

1 \({\rm{I}}{{\rm{E}}_{\rm{1}}}\,\,{\rm{of}}\,\,{\rm{M}}\,{\rm{(g)}}\,\,{\rm{is}}\,\,{\rm{100}}\,\,{\rm{e}}\,{\rm{V}}\)
2 \({\rm{I}}{{\rm{E}}_{\rm{1}}}\,\,{\rm{of}}\,\,{{\rm{M}}^{\rm{ + }}}{\rm{(g)}}\,\,{\rm{is}}\,\,{\rm{150}}\,\,{\rm{e}}\,{\rm{V}}\)
3 \({\rm{I}}{{\rm{E}}_{\rm{2}}}\,\,{\rm{of}}\,\,{\rm{M}}\,{\rm{(g)}}\,\,{\rm{is}}\,\,{\rm{250}}\,\,{\rm{e}}\,{\rm{V}}\)
4 \({\rm{I}}{{\rm{E}}_{\rm{2}}}\,\,{\rm{of}}\,\,{\rm{M}}\,{\rm{(g)}}\,\,{\rm{is}}\,\,{\rm{150}}\,\,{\rm{e}}\,{\rm{V}}\)
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