The lanthanoids
CHXII08:THE D- & F-BLOCK ELEMENTS

321704 The electronic configuration for neodymium is
[Atomic number for neodymium 60]

1 \({\mathrm{[\mathrm{Xe}] 5 \mathrm{f}^{7} 7 \mathrm{~s}^{2}}}\)
2 \({\mathrm{[\mathrm{Xe}] 4 \mathrm{f}^{6} 6 \mathrm{~s}^{2}}}\)
3 \({\mathrm{[\mathrm{Xe}] 4 \mathrm{f}^{1} 5 \mathrm{~d}^{1} 6 \mathrm{~s}^{2}}}\)
4 \({\mathrm{[\mathrm{Xe}] 4 \mathrm{f}^{4} 6 \mathrm{~s}^{2}}}\)
CHXII08:THE D- & F-BLOCK ELEMENTS

321705 The electronic configuration of \({\mathrm{\mathrm{Ce}(Z=58)}}\) is [Xe] \({\text{4}}{{\text{f}}^{\text{x}}}{\text{5}}\;{{\text{d}}^{\text{x}}}{\text{6}}\;{{\text{s}}^{\text{y}}}\). The value of ' \({\mathrm{x}}\) ' is ____ .

1 1
2 0
3 2
4 \( - 1\)
CHXII08:THE D- & F-BLOCK ELEMENTS

321706 Pair of ions which are having same number of unpaired electrons is

1 \(\mathrm{\mathrm{Eu}^{3+}, \mathrm{Tb}^{3+}}\)
2 \(\mathrm{\mathrm{Eu}^{3+}, \mathrm{Ce}^{3+}}\)
3 \(\mathrm{\mathrm{Eu}^{3+}, \mathrm{Sm}^{3+}}\)
4 \(\mathrm{\mathrm{Eu}^{3+}, \operatorname{Pr}^{3+}}\)
CHXII08:THE D- & F-BLOCK ELEMENTS

321707 The outer electronic configuration of \(\mathrm{Nd}^{2+}=\) _____

1 \(4{{\rm{f}}^2}6{{\rm{s}}^2}\)
2 \(4{{\rm{f}}^4}6{{\rm{s}}^2}\)
3 \(4{{\rm{f}}^3}\)
4 \(4{{\rm{f}}^4}\)
CHXII08:THE D- & F-BLOCK ELEMENTS

321704 The electronic configuration for neodymium is
[Atomic number for neodymium 60]

1 \({\mathrm{[\mathrm{Xe}] 5 \mathrm{f}^{7} 7 \mathrm{~s}^{2}}}\)
2 \({\mathrm{[\mathrm{Xe}] 4 \mathrm{f}^{6} 6 \mathrm{~s}^{2}}}\)
3 \({\mathrm{[\mathrm{Xe}] 4 \mathrm{f}^{1} 5 \mathrm{~d}^{1} 6 \mathrm{~s}^{2}}}\)
4 \({\mathrm{[\mathrm{Xe}] 4 \mathrm{f}^{4} 6 \mathrm{~s}^{2}}}\)
CHXII08:THE D- & F-BLOCK ELEMENTS

321705 The electronic configuration of \({\mathrm{\mathrm{Ce}(Z=58)}}\) is [Xe] \({\text{4}}{{\text{f}}^{\text{x}}}{\text{5}}\;{{\text{d}}^{\text{x}}}{\text{6}}\;{{\text{s}}^{\text{y}}}\). The value of ' \({\mathrm{x}}\) ' is ____ .

1 1
2 0
3 2
4 \( - 1\)
CHXII08:THE D- & F-BLOCK ELEMENTS

321706 Pair of ions which are having same number of unpaired electrons is

1 \(\mathrm{\mathrm{Eu}^{3+}, \mathrm{Tb}^{3+}}\)
2 \(\mathrm{\mathrm{Eu}^{3+}, \mathrm{Ce}^{3+}}\)
3 \(\mathrm{\mathrm{Eu}^{3+}, \mathrm{Sm}^{3+}}\)
4 \(\mathrm{\mathrm{Eu}^{3+}, \operatorname{Pr}^{3+}}\)
CHXII08:THE D- & F-BLOCK ELEMENTS

321707 The outer electronic configuration of \(\mathrm{Nd}^{2+}=\) _____

1 \(4{{\rm{f}}^2}6{{\rm{s}}^2}\)
2 \(4{{\rm{f}}^4}6{{\rm{s}}^2}\)
3 \(4{{\rm{f}}^3}\)
4 \(4{{\rm{f}}^4}\)
CHXII08:THE D- & F-BLOCK ELEMENTS

321704 The electronic configuration for neodymium is
[Atomic number for neodymium 60]

1 \({\mathrm{[\mathrm{Xe}] 5 \mathrm{f}^{7} 7 \mathrm{~s}^{2}}}\)
2 \({\mathrm{[\mathrm{Xe}] 4 \mathrm{f}^{6} 6 \mathrm{~s}^{2}}}\)
3 \({\mathrm{[\mathrm{Xe}] 4 \mathrm{f}^{1} 5 \mathrm{~d}^{1} 6 \mathrm{~s}^{2}}}\)
4 \({\mathrm{[\mathrm{Xe}] 4 \mathrm{f}^{4} 6 \mathrm{~s}^{2}}}\)
CHXII08:THE D- & F-BLOCK ELEMENTS

321705 The electronic configuration of \({\mathrm{\mathrm{Ce}(Z=58)}}\) is [Xe] \({\text{4}}{{\text{f}}^{\text{x}}}{\text{5}}\;{{\text{d}}^{\text{x}}}{\text{6}}\;{{\text{s}}^{\text{y}}}\). The value of ' \({\mathrm{x}}\) ' is ____ .

1 1
2 0
3 2
4 \( - 1\)
CHXII08:THE D- & F-BLOCK ELEMENTS

321706 Pair of ions which are having same number of unpaired electrons is

1 \(\mathrm{\mathrm{Eu}^{3+}, \mathrm{Tb}^{3+}}\)
2 \(\mathrm{\mathrm{Eu}^{3+}, \mathrm{Ce}^{3+}}\)
3 \(\mathrm{\mathrm{Eu}^{3+}, \mathrm{Sm}^{3+}}\)
4 \(\mathrm{\mathrm{Eu}^{3+}, \operatorname{Pr}^{3+}}\)
CHXII08:THE D- & F-BLOCK ELEMENTS

321707 The outer electronic configuration of \(\mathrm{Nd}^{2+}=\) _____

1 \(4{{\rm{f}}^2}6{{\rm{s}}^2}\)
2 \(4{{\rm{f}}^4}6{{\rm{s}}^2}\)
3 \(4{{\rm{f}}^3}\)
4 \(4{{\rm{f}}^4}\)
CHXII08:THE D- & F-BLOCK ELEMENTS

321704 The electronic configuration for neodymium is
[Atomic number for neodymium 60]

1 \({\mathrm{[\mathrm{Xe}] 5 \mathrm{f}^{7} 7 \mathrm{~s}^{2}}}\)
2 \({\mathrm{[\mathrm{Xe}] 4 \mathrm{f}^{6} 6 \mathrm{~s}^{2}}}\)
3 \({\mathrm{[\mathrm{Xe}] 4 \mathrm{f}^{1} 5 \mathrm{~d}^{1} 6 \mathrm{~s}^{2}}}\)
4 \({\mathrm{[\mathrm{Xe}] 4 \mathrm{f}^{4} 6 \mathrm{~s}^{2}}}\)
CHXII08:THE D- & F-BLOCK ELEMENTS

321705 The electronic configuration of \({\mathrm{\mathrm{Ce}(Z=58)}}\) is [Xe] \({\text{4}}{{\text{f}}^{\text{x}}}{\text{5}}\;{{\text{d}}^{\text{x}}}{\text{6}}\;{{\text{s}}^{\text{y}}}\). The value of ' \({\mathrm{x}}\) ' is ____ .

1 1
2 0
3 2
4 \( - 1\)
CHXII08:THE D- & F-BLOCK ELEMENTS

321706 Pair of ions which are having same number of unpaired electrons is

1 \(\mathrm{\mathrm{Eu}^{3+}, \mathrm{Tb}^{3+}}\)
2 \(\mathrm{\mathrm{Eu}^{3+}, \mathrm{Ce}^{3+}}\)
3 \(\mathrm{\mathrm{Eu}^{3+}, \mathrm{Sm}^{3+}}\)
4 \(\mathrm{\mathrm{Eu}^{3+}, \operatorname{Pr}^{3+}}\)
CHXII08:THE D- & F-BLOCK ELEMENTS

321707 The outer electronic configuration of \(\mathrm{Nd}^{2+}=\) _____

1 \(4{{\rm{f}}^2}6{{\rm{s}}^2}\)
2 \(4{{\rm{f}}^4}6{{\rm{s}}^2}\)
3 \(4{{\rm{f}}^3}\)
4 \(4{{\rm{f}}^4}\)
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