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

313310 Read the Assertion and Reason to mark the correct option given below.
Assertion :
The first ionisation enthalpy decreases across a period.
Reason :
The increasing nuclear charge outweights the shielding across the period.

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.
JEE Main - 2024
CHXI03:CLASSIFICATION OF ELEMENTS AND PERIODICITY IN PROPERTIES

313311 Assertion :
Removal of \(\mathrm{s}\)-electron is relatively difficult than removal of \(\mathrm{p}\) - electron of the same main shell.
Reason :
\(\mathrm{s}\) - electrons are closer to the nucleus than \(\mathrm{p}\) - electrons of the same shell and hence, are more strongly attracted by nucleus.

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 Both Assertion and Reason are incorrect
AIIMS - 2012
CHXI03:CLASSIFICATION OF ELEMENTS AND PERIODICITY IN PROPERTIES

313312 Among the following, the second ionization energy is maximum for

1 Mg
2 Al
3 Si
4 B
CHXI03:CLASSIFICATION OF ELEMENTS AND PERIODICITY IN PROPERTIES

313313 In the following, the element with the highest ionisation energy is

1 \(\left[ {{\rm{Ne}}} \right]{\rm{3}}{{\rm{s}}^{\rm{2}}}{\rm{3}}{{\rm{p}}^{\rm{1}}}\)
2 \(\left[ {{\rm{Ne}}} \right]{\rm{3}}{{\rm{s}}^{\rm{2}}}{\rm{3}}{{\rm{p}}^{\rm{3}}}\)
3 \(\left[ {{\rm{Ne}}} \right]{\rm{3}}{{\rm{s}}^{\rm{2}}}{\rm{3}}{{\rm{p}}^{\rm{2}}}\)
4 \(\left[ {{\rm{Ne}}} \right]{\rm{3}}{{\rm{s}}^{\rm{2}}}{\rm{3}}{{\rm{p}}^{\rm{4}}}\)
KCET - 2006
CHXI03:CLASSIFICATION OF ELEMENTS AND PERIODICITY IN PROPERTIES

313314 The correct order of first ionisation enthalpy values of the following elements is
\({\rm{(I) O}}\,\,\,\,\,\,\,{\rm{(II) N}}\,\,\,\,\,\,{\rm{(III) Be}}\,\,\,\,\,{\rm{(IV) F}}\)
\({\rm{(V) B}}\)
Choose the correct answer from the options given below :

1 III \({\mathrm{ < }}\) V \({\mathrm{ < }}\) I \({\mathrm{ < }}\) II \({\mathrm{ < }}\) IV
2 V \({\mathrm{ < }}\) III \({\mathrm{ < }}\) I \({\mathrm{ < }}\) II \({\mathrm{ < }}\) IV
3 I \({\mathrm{ < }}\) II \({\mathrm{ < }}\) IV \({\mathrm{ < }}\) III \({\mathrm{ < }}\) V
4 II \({\mathrm{ < }}\) IV \({\mathrm{ < }}\) III \({\mathrm{ < }}\) V \({\mathrm{ < }}\) I
JEE Main - 2024
NEET DIGITAL LIBRARY
CHXI03:CLASSIFICATION OF ELEMENTS AND PERIODICITY IN PROPERTIES

313310 Read the Assertion and Reason to mark the correct option given below.
Assertion :
The first ionisation enthalpy decreases across a period.
Reason :
The increasing nuclear charge outweights the shielding across the period.

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.
JEE Main - 2024
CHXI03:CLASSIFICATION OF ELEMENTS AND PERIODICITY IN PROPERTIES

313311 Assertion :
Removal of \(\mathrm{s}\)-electron is relatively difficult than removal of \(\mathrm{p}\) - electron of the same main shell.
Reason :
\(\mathrm{s}\) - electrons are closer to the nucleus than \(\mathrm{p}\) - electrons of the same shell and hence, are more strongly attracted by nucleus.

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 Both Assertion and Reason are incorrect
AIIMS - 2012
CHXI03:CLASSIFICATION OF ELEMENTS AND PERIODICITY IN PROPERTIES

313312 Among the following, the second ionization energy is maximum for

1 Mg
2 Al
3 Si
4 B
CHXI03:CLASSIFICATION OF ELEMENTS AND PERIODICITY IN PROPERTIES

313313 In the following, the element with the highest ionisation energy is

1 \(\left[ {{\rm{Ne}}} \right]{\rm{3}}{{\rm{s}}^{\rm{2}}}{\rm{3}}{{\rm{p}}^{\rm{1}}}\)
2 \(\left[ {{\rm{Ne}}} \right]{\rm{3}}{{\rm{s}}^{\rm{2}}}{\rm{3}}{{\rm{p}}^{\rm{3}}}\)
3 \(\left[ {{\rm{Ne}}} \right]{\rm{3}}{{\rm{s}}^{\rm{2}}}{\rm{3}}{{\rm{p}}^{\rm{2}}}\)
4 \(\left[ {{\rm{Ne}}} \right]{\rm{3}}{{\rm{s}}^{\rm{2}}}{\rm{3}}{{\rm{p}}^{\rm{4}}}\)
KCET - 2006
CHXI03:CLASSIFICATION OF ELEMENTS AND PERIODICITY IN PROPERTIES

313314 The correct order of first ionisation enthalpy values of the following elements is
\({\rm{(I) O}}\,\,\,\,\,\,\,{\rm{(II) N}}\,\,\,\,\,\,{\rm{(III) Be}}\,\,\,\,\,{\rm{(IV) F}}\)
\({\rm{(V) B}}\)
Choose the correct answer from the options given below :

1 III \({\mathrm{ < }}\) V \({\mathrm{ < }}\) I \({\mathrm{ < }}\) II \({\mathrm{ < }}\) IV
2 V \({\mathrm{ < }}\) III \({\mathrm{ < }}\) I \({\mathrm{ < }}\) II \({\mathrm{ < }}\) IV
3 I \({\mathrm{ < }}\) II \({\mathrm{ < }}\) IV \({\mathrm{ < }}\) III \({\mathrm{ < }}\) V
4 II \({\mathrm{ < }}\) IV \({\mathrm{ < }}\) III \({\mathrm{ < }}\) V \({\mathrm{ < }}\) I
JEE Main - 2024
Join With Us for More Updates
CHXI03:CLASSIFICATION OF ELEMENTS AND PERIODICITY IN PROPERTIES

313310 Read the Assertion and Reason to mark the correct option given below.
Assertion :
The first ionisation enthalpy decreases across a period.
Reason :
The increasing nuclear charge outweights the shielding across the period.

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.
JEE Main - 2024
CHXI03:CLASSIFICATION OF ELEMENTS AND PERIODICITY IN PROPERTIES

313311 Assertion :
Removal of \(\mathrm{s}\)-electron is relatively difficult than removal of \(\mathrm{p}\) - electron of the same main shell.
Reason :
\(\mathrm{s}\) - electrons are closer to the nucleus than \(\mathrm{p}\) - electrons of the same shell and hence, are more strongly attracted by nucleus.

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 Both Assertion and Reason are incorrect
AIIMS - 2012
CHXI03:CLASSIFICATION OF ELEMENTS AND PERIODICITY IN PROPERTIES

313312 Among the following, the second ionization energy is maximum for

1 Mg
2 Al
3 Si
4 B
CHXI03:CLASSIFICATION OF ELEMENTS AND PERIODICITY IN PROPERTIES

313313 In the following, the element with the highest ionisation energy is

1 \(\left[ {{\rm{Ne}}} \right]{\rm{3}}{{\rm{s}}^{\rm{2}}}{\rm{3}}{{\rm{p}}^{\rm{1}}}\)
2 \(\left[ {{\rm{Ne}}} \right]{\rm{3}}{{\rm{s}}^{\rm{2}}}{\rm{3}}{{\rm{p}}^{\rm{3}}}\)
3 \(\left[ {{\rm{Ne}}} \right]{\rm{3}}{{\rm{s}}^{\rm{2}}}{\rm{3}}{{\rm{p}}^{\rm{2}}}\)
4 \(\left[ {{\rm{Ne}}} \right]{\rm{3}}{{\rm{s}}^{\rm{2}}}{\rm{3}}{{\rm{p}}^{\rm{4}}}\)
KCET - 2006
CHXI03:CLASSIFICATION OF ELEMENTS AND PERIODICITY IN PROPERTIES

313314 The correct order of first ionisation enthalpy values of the following elements is
\({\rm{(I) O}}\,\,\,\,\,\,\,{\rm{(II) N}}\,\,\,\,\,\,{\rm{(III) Be}}\,\,\,\,\,{\rm{(IV) F}}\)
\({\rm{(V) B}}\)
Choose the correct answer from the options given below :

1 III \({\mathrm{ < }}\) V \({\mathrm{ < }}\) I \({\mathrm{ < }}\) II \({\mathrm{ < }}\) IV
2 V \({\mathrm{ < }}\) III \({\mathrm{ < }}\) I \({\mathrm{ < }}\) II \({\mathrm{ < }}\) IV
3 I \({\mathrm{ < }}\) II \({\mathrm{ < }}\) IV \({\mathrm{ < }}\) III \({\mathrm{ < }}\) V
4 II \({\mathrm{ < }}\) IV \({\mathrm{ < }}\) III \({\mathrm{ < }}\) V \({\mathrm{ < }}\) I
JEE Main - 2024
For More Updates join with Us
CHXI03:CLASSIFICATION OF ELEMENTS AND PERIODICITY IN PROPERTIES

313310 Read the Assertion and Reason to mark the correct option given below.
Assertion :
The first ionisation enthalpy decreases across a period.
Reason :
The increasing nuclear charge outweights the shielding across the period.

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.
JEE Main - 2024
CHXI03:CLASSIFICATION OF ELEMENTS AND PERIODICITY IN PROPERTIES

313311 Assertion :
Removal of \(\mathrm{s}\)-electron is relatively difficult than removal of \(\mathrm{p}\) - electron of the same main shell.
Reason :
\(\mathrm{s}\) - electrons are closer to the nucleus than \(\mathrm{p}\) - electrons of the same shell and hence, are more strongly attracted by nucleus.

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 Both Assertion and Reason are incorrect
AIIMS - 2012
CHXI03:CLASSIFICATION OF ELEMENTS AND PERIODICITY IN PROPERTIES

313312 Among the following, the second ionization energy is maximum for

1 Mg
2 Al
3 Si
4 B
CHXI03:CLASSIFICATION OF ELEMENTS AND PERIODICITY IN PROPERTIES

313313 In the following, the element with the highest ionisation energy is

1 \(\left[ {{\rm{Ne}}} \right]{\rm{3}}{{\rm{s}}^{\rm{2}}}{\rm{3}}{{\rm{p}}^{\rm{1}}}\)
2 \(\left[ {{\rm{Ne}}} \right]{\rm{3}}{{\rm{s}}^{\rm{2}}}{\rm{3}}{{\rm{p}}^{\rm{3}}}\)
3 \(\left[ {{\rm{Ne}}} \right]{\rm{3}}{{\rm{s}}^{\rm{2}}}{\rm{3}}{{\rm{p}}^{\rm{2}}}\)
4 \(\left[ {{\rm{Ne}}} \right]{\rm{3}}{{\rm{s}}^{\rm{2}}}{\rm{3}}{{\rm{p}}^{\rm{4}}}\)
KCET - 2006
CHXI03:CLASSIFICATION OF ELEMENTS AND PERIODICITY IN PROPERTIES

313314 The correct order of first ionisation enthalpy values of the following elements is
\({\rm{(I) O}}\,\,\,\,\,\,\,{\rm{(II) N}}\,\,\,\,\,\,{\rm{(III) Be}}\,\,\,\,\,{\rm{(IV) F}}\)
\({\rm{(V) B}}\)
Choose the correct answer from the options given below :

1 III \({\mathrm{ < }}\) V \({\mathrm{ < }}\) I \({\mathrm{ < }}\) II \({\mathrm{ < }}\) IV
2 V \({\mathrm{ < }}\) III \({\mathrm{ < }}\) I \({\mathrm{ < }}\) II \({\mathrm{ < }}\) IV
3 I \({\mathrm{ < }}\) II \({\mathrm{ < }}\) IV \({\mathrm{ < }}\) III \({\mathrm{ < }}\) V
4 II \({\mathrm{ < }}\) IV \({\mathrm{ < }}\) III \({\mathrm{ < }}\) V \({\mathrm{ < }}\) I
JEE Main - 2024
NEET DIGITAL LIBRARY
CHXI03:CLASSIFICATION OF ELEMENTS AND PERIODICITY IN PROPERTIES

313310 Read the Assertion and Reason to mark the correct option given below.
Assertion :
The first ionisation enthalpy decreases across a period.
Reason :
The increasing nuclear charge outweights the shielding across the period.

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.
JEE Main - 2024
CHXI03:CLASSIFICATION OF ELEMENTS AND PERIODICITY IN PROPERTIES

313311 Assertion :
Removal of \(\mathrm{s}\)-electron is relatively difficult than removal of \(\mathrm{p}\) - electron of the same main shell.
Reason :
\(\mathrm{s}\) - electrons are closer to the nucleus than \(\mathrm{p}\) - electrons of the same shell and hence, are more strongly attracted by nucleus.

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 Both Assertion and Reason are incorrect
AIIMS - 2012
CHXI03:CLASSIFICATION OF ELEMENTS AND PERIODICITY IN PROPERTIES

313312 Among the following, the second ionization energy is maximum for

1 Mg
2 Al
3 Si
4 B
CHXI03:CLASSIFICATION OF ELEMENTS AND PERIODICITY IN PROPERTIES

313313 In the following, the element with the highest ionisation energy is

1 \(\left[ {{\rm{Ne}}} \right]{\rm{3}}{{\rm{s}}^{\rm{2}}}{\rm{3}}{{\rm{p}}^{\rm{1}}}\)
2 \(\left[ {{\rm{Ne}}} \right]{\rm{3}}{{\rm{s}}^{\rm{2}}}{\rm{3}}{{\rm{p}}^{\rm{3}}}\)
3 \(\left[ {{\rm{Ne}}} \right]{\rm{3}}{{\rm{s}}^{\rm{2}}}{\rm{3}}{{\rm{p}}^{\rm{2}}}\)
4 \(\left[ {{\rm{Ne}}} \right]{\rm{3}}{{\rm{s}}^{\rm{2}}}{\rm{3}}{{\rm{p}}^{\rm{4}}}\)
KCET - 2006
CHXI03:CLASSIFICATION OF ELEMENTS AND PERIODICITY IN PROPERTIES

313314 The correct order of first ionisation enthalpy values of the following elements is
\({\rm{(I) O}}\,\,\,\,\,\,\,{\rm{(II) N}}\,\,\,\,\,\,{\rm{(III) Be}}\,\,\,\,\,{\rm{(IV) F}}\)
\({\rm{(V) B}}\)
Choose the correct answer from the options given below :

1 III \({\mathrm{ < }}\) V \({\mathrm{ < }}\) I \({\mathrm{ < }}\) II \({\mathrm{ < }}\) IV
2 V \({\mathrm{ < }}\) III \({\mathrm{ < }}\) I \({\mathrm{ < }}\) II \({\mathrm{ < }}\) IV
3 I \({\mathrm{ < }}\) II \({\mathrm{ < }}\) IV \({\mathrm{ < }}\) III \({\mathrm{ < }}\) V
4 II \({\mathrm{ < }}\) IV \({\mathrm{ < }}\) III \({\mathrm{ < }}\) V \({\mathrm{ < }}\) I
JEE Main - 2024