Here, \({\rm{I}}{{\rm{E}}_{\rm{2}}}\) involves the removal of an electron from the inert gas configuration \(\left( {{\rm{1}}{{\rm{s}}^{\rm{2}}}\,{\rm{2}}{{\rm{s}}^{\rm{2}}}\,{\rm{2}}{{\rm{p}}^{\rm{6}}}} \right)\). So, it has highest value of second ionisation enthalpy.
CHXI03:CLASSIFICATION OF ELEMENTS AND PERIODICITY IN PROPERTIES
313333
A large increase from the first to the second ionisation energy of an element ' A ' can be seen if its electronic configuration is
Element ' A ' with the E.C. \({\rm{ - 1}}{{\rm{s}}^{\rm{2}}}{\mkern 1mu} {\rm{2}}{{\rm{s}}^{\rm{2}}}{\mkern 1mu} {\rm{2}}{{\rm{p}}^{\rm{6}}}{\mkern 1mu} {\rm{3}}{{\rm{s}}^{\rm{1}}}\) will have large increase in the second ionisation energy due to the stable configuration (noble gas configuration) after the removal of 3 s-electron and it is difficult to remove an electron from the stable noble gas configuration.
CHXI03:CLASSIFICATION OF ELEMENTS AND PERIODICITY IN PROPERTIES
313334
Assertion : I.E. of \(_{\text{7}}{\text{N}}\) is more than that of, \({ }_{8} \mathrm{O}\) as well as \({ }_{6} \mathrm{C}\). Reason : This is due to difference in reactivity towards oxygen.
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.
Explanation:
Nitrogen has half-filled stable configuration. Thus, more energy is needed to remove electron from it as compared to oxygen atom with incompletely filled valence shell. So option (3) is correct.
CHXI03:CLASSIFICATION OF ELEMENTS AND PERIODICITY IN PROPERTIES
313335
For one of the elements various successive ionization enthalpies \(\left( {{\rm{in}}\,\,{\rm{kJ}}\,\,{\rm{mo}}{{\rm{l}}^{{\rm{ - 1}}}}} \right)\) are given below the element is
1 P
2 Mg
3 Si
4 Al
Explanation:
Large jump between \({\rm{I}}{{\rm{E}}_{\rm{3}}}\,\,{\rm{and}}\,\,{\rm{I}}{{\rm{E}}_{\rm{4}}}\) suggest that the element has three valence electrons.
Here, \({\rm{I}}{{\rm{E}}_{\rm{2}}}\) involves the removal of an electron from the inert gas configuration \(\left( {{\rm{1}}{{\rm{s}}^{\rm{2}}}\,{\rm{2}}{{\rm{s}}^{\rm{2}}}\,{\rm{2}}{{\rm{p}}^{\rm{6}}}} \right)\). So, it has highest value of second ionisation enthalpy.
CHXI03:CLASSIFICATION OF ELEMENTS AND PERIODICITY IN PROPERTIES
313333
A large increase from the first to the second ionisation energy of an element ' A ' can be seen if its electronic configuration is
Element ' A ' with the E.C. \({\rm{ - 1}}{{\rm{s}}^{\rm{2}}}{\mkern 1mu} {\rm{2}}{{\rm{s}}^{\rm{2}}}{\mkern 1mu} {\rm{2}}{{\rm{p}}^{\rm{6}}}{\mkern 1mu} {\rm{3}}{{\rm{s}}^{\rm{1}}}\) will have large increase in the second ionisation energy due to the stable configuration (noble gas configuration) after the removal of 3 s-electron and it is difficult to remove an electron from the stable noble gas configuration.
CHXI03:CLASSIFICATION OF ELEMENTS AND PERIODICITY IN PROPERTIES
313334
Assertion : I.E. of \(_{\text{7}}{\text{N}}\) is more than that of, \({ }_{8} \mathrm{O}\) as well as \({ }_{6} \mathrm{C}\). Reason : This is due to difference in reactivity towards oxygen.
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.
Explanation:
Nitrogen has half-filled stable configuration. Thus, more energy is needed to remove electron from it as compared to oxygen atom with incompletely filled valence shell. So option (3) is correct.
CHXI03:CLASSIFICATION OF ELEMENTS AND PERIODICITY IN PROPERTIES
313335
For one of the elements various successive ionization enthalpies \(\left( {{\rm{in}}\,\,{\rm{kJ}}\,\,{\rm{mo}}{{\rm{l}}^{{\rm{ - 1}}}}} \right)\) are given below the element is
1 P
2 Mg
3 Si
4 Al
Explanation:
Large jump between \({\rm{I}}{{\rm{E}}_{\rm{3}}}\,\,{\rm{and}}\,\,{\rm{I}}{{\rm{E}}_{\rm{4}}}\) suggest that the element has three valence electrons.
Here, \({\rm{I}}{{\rm{E}}_{\rm{2}}}\) involves the removal of an electron from the inert gas configuration \(\left( {{\rm{1}}{{\rm{s}}^{\rm{2}}}\,{\rm{2}}{{\rm{s}}^{\rm{2}}}\,{\rm{2}}{{\rm{p}}^{\rm{6}}}} \right)\). So, it has highest value of second ionisation enthalpy.
CHXI03:CLASSIFICATION OF ELEMENTS AND PERIODICITY IN PROPERTIES
313333
A large increase from the first to the second ionisation energy of an element ' A ' can be seen if its electronic configuration is
Element ' A ' with the E.C. \({\rm{ - 1}}{{\rm{s}}^{\rm{2}}}{\mkern 1mu} {\rm{2}}{{\rm{s}}^{\rm{2}}}{\mkern 1mu} {\rm{2}}{{\rm{p}}^{\rm{6}}}{\mkern 1mu} {\rm{3}}{{\rm{s}}^{\rm{1}}}\) will have large increase in the second ionisation energy due to the stable configuration (noble gas configuration) after the removal of 3 s-electron and it is difficult to remove an electron from the stable noble gas configuration.
CHXI03:CLASSIFICATION OF ELEMENTS AND PERIODICITY IN PROPERTIES
313334
Assertion : I.E. of \(_{\text{7}}{\text{N}}\) is more than that of, \({ }_{8} \mathrm{O}\) as well as \({ }_{6} \mathrm{C}\). Reason : This is due to difference in reactivity towards oxygen.
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.
Explanation:
Nitrogen has half-filled stable configuration. Thus, more energy is needed to remove electron from it as compared to oxygen atom with incompletely filled valence shell. So option (3) is correct.
CHXI03:CLASSIFICATION OF ELEMENTS AND PERIODICITY IN PROPERTIES
313335
For one of the elements various successive ionization enthalpies \(\left( {{\rm{in}}\,\,{\rm{kJ}}\,\,{\rm{mo}}{{\rm{l}}^{{\rm{ - 1}}}}} \right)\) are given below the element is
1 P
2 Mg
3 Si
4 Al
Explanation:
Large jump between \({\rm{I}}{{\rm{E}}_{\rm{3}}}\,\,{\rm{and}}\,\,{\rm{I}}{{\rm{E}}_{\rm{4}}}\) suggest that the element has three valence electrons.
Here, \({\rm{I}}{{\rm{E}}_{\rm{2}}}\) involves the removal of an electron from the inert gas configuration \(\left( {{\rm{1}}{{\rm{s}}^{\rm{2}}}\,{\rm{2}}{{\rm{s}}^{\rm{2}}}\,{\rm{2}}{{\rm{p}}^{\rm{6}}}} \right)\). So, it has highest value of second ionisation enthalpy.
CHXI03:CLASSIFICATION OF ELEMENTS AND PERIODICITY IN PROPERTIES
313333
A large increase from the first to the second ionisation energy of an element ' A ' can be seen if its electronic configuration is
Element ' A ' with the E.C. \({\rm{ - 1}}{{\rm{s}}^{\rm{2}}}{\mkern 1mu} {\rm{2}}{{\rm{s}}^{\rm{2}}}{\mkern 1mu} {\rm{2}}{{\rm{p}}^{\rm{6}}}{\mkern 1mu} {\rm{3}}{{\rm{s}}^{\rm{1}}}\) will have large increase in the second ionisation energy due to the stable configuration (noble gas configuration) after the removal of 3 s-electron and it is difficult to remove an electron from the stable noble gas configuration.
CHXI03:CLASSIFICATION OF ELEMENTS AND PERIODICITY IN PROPERTIES
313334
Assertion : I.E. of \(_{\text{7}}{\text{N}}\) is more than that of, \({ }_{8} \mathrm{O}\) as well as \({ }_{6} \mathrm{C}\). Reason : This is due to difference in reactivity towards oxygen.
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.
Explanation:
Nitrogen has half-filled stable configuration. Thus, more energy is needed to remove electron from it as compared to oxygen atom with incompletely filled valence shell. So option (3) is correct.
CHXI03:CLASSIFICATION OF ELEMENTS AND PERIODICITY IN PROPERTIES
313335
For one of the elements various successive ionization enthalpies \(\left( {{\rm{in}}\,\,{\rm{kJ}}\,\,{\rm{mo}}{{\rm{l}}^{{\rm{ - 1}}}}} \right)\) are given below the element is
1 P
2 Mg
3 Si
4 Al
Explanation:
Large jump between \({\rm{I}}{{\rm{E}}_{\rm{3}}}\,\,{\rm{and}}\,\,{\rm{I}}{{\rm{E}}_{\rm{4}}}\) suggest that the element has three valence electrons.
