Electronic Configuration of Elements and Magnetic Properties
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CHXI02:STRUCTURE OF ATOM

307272 Which among the following species have the same number of electrons in its outermost as well as penultimate shell?

1 \(\mathrm{Mg}^{2+}\)
2 \(\mathrm{O}^{2-}\)
3 \(\mathrm{F}^{-}\)
4 \(\mathrm{Ca}^{2+}\)
CHXI02:STRUCTURE OF ATOM

307273 Which of the following options does not represent ground state electronic configuration of an atom?

1 \({\rm{1}}{{\rm{s}}^{\rm{2}}}{\rm{2}}{{\rm{s}}^{\rm{2}}}{\rm{2}}{{\rm{p}}^{\rm{6}}}{\rm{3}}{{\rm{s}}^{\rm{2}}}{\rm{3}}{{\rm{p}}^{\rm{6}}}{\rm{3}}{{\rm{d}}^{\rm{8}}}{\rm{4}}{{\rm{s}}^{\rm{2}}}\)
2 \({\rm{1}}{{\rm{s}}^{\rm{2}}}{\rm{2}}{{\rm{s}}^{\rm{2}}}{\rm{2}}{{\rm{p}}^{\rm{6}}}{\rm{3}}{{\rm{s}}^{\rm{2}}}{\rm{3}}{{\rm{p}}^{\rm{6}}}{\rm{3}}{{\rm{d}}^{\rm{9}}}{\rm{4}}{{\rm{s}}^{\rm{2}}}\)
3 \({\rm{1}}{{\rm{s}}^{\rm{2}}}{\rm{2}}{{\rm{s}}^{\rm{2}}}{\rm{2}}{{\rm{p}}^{\rm{6}}}{\rm{3}}{{\rm{s}}^{\rm{2}}}{\rm{3}}{{\rm{p}}^{\rm{6}}}{\rm{3}}{{\rm{d}}^{{\rm{10}}}}{\rm{4}}{{\rm{s}}^{\rm{1}}}\)
4 \({\rm{1}}{{\rm{s}}^{\rm{2}}}{\rm{2}}{{\rm{s}}^{\rm{2}}}{\rm{2}}{{\rm{p}}^{\rm{6}}}{\rm{3}}{{\rm{s}}^{\rm{2}}}{\rm{3}}{{\rm{p}}^{\rm{6}}}{\rm{3}}{{\rm{d}}^{\rm{5}}}{\rm{4}}{{\rm{s}}^{\rm{1}}}\)
NCERT Exemplar
CHXI02:STRUCTURE OF ATOM

307274 Among the elements from atomic number 1 to 36, the number of elements which have an unpaired electron in their s-subshell is

1 \({\rm{4}}\)
2 \({\rm{7}}\)
3 \({\rm{6}}\)
4 \({\rm{9}}\)
KCET - 2014
CHXI02:STRUCTURE OF ATOM

307276 Which of the following statement is correct?

1 Greater the number of unpaired electrons, more is the paramagnetic character
2 Greater the number of unpaired electrons, less is paramagnetic character
3 Elements are mostly diamagnetic and compounds are paramagnetic
4 Elements are mostly paramagnetic and compounds are diamagnetic
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CHXI02:STRUCTURE OF ATOM

307272 Which among the following species have the same number of electrons in its outermost as well as penultimate shell?

1 \(\mathrm{Mg}^{2+}\)
2 \(\mathrm{O}^{2-}\)
3 \(\mathrm{F}^{-}\)
4 \(\mathrm{Ca}^{2+}\)
CHXI02:STRUCTURE OF ATOM

307273 Which of the following options does not represent ground state electronic configuration of an atom?

1 \({\rm{1}}{{\rm{s}}^{\rm{2}}}{\rm{2}}{{\rm{s}}^{\rm{2}}}{\rm{2}}{{\rm{p}}^{\rm{6}}}{\rm{3}}{{\rm{s}}^{\rm{2}}}{\rm{3}}{{\rm{p}}^{\rm{6}}}{\rm{3}}{{\rm{d}}^{\rm{8}}}{\rm{4}}{{\rm{s}}^{\rm{2}}}\)
2 \({\rm{1}}{{\rm{s}}^{\rm{2}}}{\rm{2}}{{\rm{s}}^{\rm{2}}}{\rm{2}}{{\rm{p}}^{\rm{6}}}{\rm{3}}{{\rm{s}}^{\rm{2}}}{\rm{3}}{{\rm{p}}^{\rm{6}}}{\rm{3}}{{\rm{d}}^{\rm{9}}}{\rm{4}}{{\rm{s}}^{\rm{2}}}\)
3 \({\rm{1}}{{\rm{s}}^{\rm{2}}}{\rm{2}}{{\rm{s}}^{\rm{2}}}{\rm{2}}{{\rm{p}}^{\rm{6}}}{\rm{3}}{{\rm{s}}^{\rm{2}}}{\rm{3}}{{\rm{p}}^{\rm{6}}}{\rm{3}}{{\rm{d}}^{{\rm{10}}}}{\rm{4}}{{\rm{s}}^{\rm{1}}}\)
4 \({\rm{1}}{{\rm{s}}^{\rm{2}}}{\rm{2}}{{\rm{s}}^{\rm{2}}}{\rm{2}}{{\rm{p}}^{\rm{6}}}{\rm{3}}{{\rm{s}}^{\rm{2}}}{\rm{3}}{{\rm{p}}^{\rm{6}}}{\rm{3}}{{\rm{d}}^{\rm{5}}}{\rm{4}}{{\rm{s}}^{\rm{1}}}\)
NCERT Exemplar
CHXI02:STRUCTURE OF ATOM

307274 Among the elements from atomic number 1 to 36, the number of elements which have an unpaired electron in their s-subshell is

1 \({\rm{4}}\)
2 \({\rm{7}}\)
3 \({\rm{6}}\)
4 \({\rm{9}}\)
KCET - 2014
CHXI02:STRUCTURE OF ATOM

307276 Which of the following statement is correct?

1 Greater the number of unpaired electrons, more is the paramagnetic character
2 Greater the number of unpaired electrons, less is paramagnetic character
3 Elements are mostly diamagnetic and compounds are paramagnetic
4 Elements are mostly paramagnetic and compounds are diamagnetic
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CHXI02:STRUCTURE OF ATOM

307272 Which among the following species have the same number of electrons in its outermost as well as penultimate shell?

1 \(\mathrm{Mg}^{2+}\)
2 \(\mathrm{O}^{2-}\)
3 \(\mathrm{F}^{-}\)
4 \(\mathrm{Ca}^{2+}\)
CHXI02:STRUCTURE OF ATOM

307273 Which of the following options does not represent ground state electronic configuration of an atom?

1 \({\rm{1}}{{\rm{s}}^{\rm{2}}}{\rm{2}}{{\rm{s}}^{\rm{2}}}{\rm{2}}{{\rm{p}}^{\rm{6}}}{\rm{3}}{{\rm{s}}^{\rm{2}}}{\rm{3}}{{\rm{p}}^{\rm{6}}}{\rm{3}}{{\rm{d}}^{\rm{8}}}{\rm{4}}{{\rm{s}}^{\rm{2}}}\)
2 \({\rm{1}}{{\rm{s}}^{\rm{2}}}{\rm{2}}{{\rm{s}}^{\rm{2}}}{\rm{2}}{{\rm{p}}^{\rm{6}}}{\rm{3}}{{\rm{s}}^{\rm{2}}}{\rm{3}}{{\rm{p}}^{\rm{6}}}{\rm{3}}{{\rm{d}}^{\rm{9}}}{\rm{4}}{{\rm{s}}^{\rm{2}}}\)
3 \({\rm{1}}{{\rm{s}}^{\rm{2}}}{\rm{2}}{{\rm{s}}^{\rm{2}}}{\rm{2}}{{\rm{p}}^{\rm{6}}}{\rm{3}}{{\rm{s}}^{\rm{2}}}{\rm{3}}{{\rm{p}}^{\rm{6}}}{\rm{3}}{{\rm{d}}^{{\rm{10}}}}{\rm{4}}{{\rm{s}}^{\rm{1}}}\)
4 \({\rm{1}}{{\rm{s}}^{\rm{2}}}{\rm{2}}{{\rm{s}}^{\rm{2}}}{\rm{2}}{{\rm{p}}^{\rm{6}}}{\rm{3}}{{\rm{s}}^{\rm{2}}}{\rm{3}}{{\rm{p}}^{\rm{6}}}{\rm{3}}{{\rm{d}}^{\rm{5}}}{\rm{4}}{{\rm{s}}^{\rm{1}}}\)
NCERT Exemplar
CHXI02:STRUCTURE OF ATOM

307274 Among the elements from atomic number 1 to 36, the number of elements which have an unpaired electron in their s-subshell is

1 \({\rm{4}}\)
2 \({\rm{7}}\)
3 \({\rm{6}}\)
4 \({\rm{9}}\)
KCET - 2014
CHXI02:STRUCTURE OF ATOM

307276 Which of the following statement is correct?

1 Greater the number of unpaired electrons, more is the paramagnetic character
2 Greater the number of unpaired electrons, less is paramagnetic character
3 Elements are mostly diamagnetic and compounds are paramagnetic
4 Elements are mostly paramagnetic and compounds are diamagnetic
For More Updates join with Us
NEET Test Series from KOTA - 10 Papers In MS WORD WhatsApp Here
CHXI02:STRUCTURE OF ATOM

307272 Which among the following species have the same number of electrons in its outermost as well as penultimate shell?

1 \(\mathrm{Mg}^{2+}\)
2 \(\mathrm{O}^{2-}\)
3 \(\mathrm{F}^{-}\)
4 \(\mathrm{Ca}^{2+}\)
CHXI02:STRUCTURE OF ATOM

307273 Which of the following options does not represent ground state electronic configuration of an atom?

1 \({\rm{1}}{{\rm{s}}^{\rm{2}}}{\rm{2}}{{\rm{s}}^{\rm{2}}}{\rm{2}}{{\rm{p}}^{\rm{6}}}{\rm{3}}{{\rm{s}}^{\rm{2}}}{\rm{3}}{{\rm{p}}^{\rm{6}}}{\rm{3}}{{\rm{d}}^{\rm{8}}}{\rm{4}}{{\rm{s}}^{\rm{2}}}\)
2 \({\rm{1}}{{\rm{s}}^{\rm{2}}}{\rm{2}}{{\rm{s}}^{\rm{2}}}{\rm{2}}{{\rm{p}}^{\rm{6}}}{\rm{3}}{{\rm{s}}^{\rm{2}}}{\rm{3}}{{\rm{p}}^{\rm{6}}}{\rm{3}}{{\rm{d}}^{\rm{9}}}{\rm{4}}{{\rm{s}}^{\rm{2}}}\)
3 \({\rm{1}}{{\rm{s}}^{\rm{2}}}{\rm{2}}{{\rm{s}}^{\rm{2}}}{\rm{2}}{{\rm{p}}^{\rm{6}}}{\rm{3}}{{\rm{s}}^{\rm{2}}}{\rm{3}}{{\rm{p}}^{\rm{6}}}{\rm{3}}{{\rm{d}}^{{\rm{10}}}}{\rm{4}}{{\rm{s}}^{\rm{1}}}\)
4 \({\rm{1}}{{\rm{s}}^{\rm{2}}}{\rm{2}}{{\rm{s}}^{\rm{2}}}{\rm{2}}{{\rm{p}}^{\rm{6}}}{\rm{3}}{{\rm{s}}^{\rm{2}}}{\rm{3}}{{\rm{p}}^{\rm{6}}}{\rm{3}}{{\rm{d}}^{\rm{5}}}{\rm{4}}{{\rm{s}}^{\rm{1}}}\)
NCERT Exemplar
CHXI02:STRUCTURE OF ATOM

307274 Among the elements from atomic number 1 to 36, the number of elements which have an unpaired electron in their s-subshell is

1 \({\rm{4}}\)
2 \({\rm{7}}\)
3 \({\rm{6}}\)
4 \({\rm{9}}\)
KCET - 2014
CHXI02:STRUCTURE OF ATOM

307276 Which of the following statement is correct?

1 Greater the number of unpaired electrons, more is the paramagnetic character
2 Greater the number of unpaired electrons, less is paramagnetic character
3 Elements are mostly diamagnetic and compounds are paramagnetic
4 Elements are mostly paramagnetic and compounds are diamagnetic
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