প্রতীক

ইলেকট্রন বিন্যাস

A

$(n - 1)\text{d}^6\text{ ns}^2$

$\text{n} = 4$

B

$(n - 1)\text{d}^{10}\text{ ns}^2$

$\text{n} = 4$

C

$\text{ns}^2\text{ np}^6$

$\text{n} = 3$

$\mathrm{X}$

$(\mathrm{n}-1) \mathrm{d}^{6} \mathrm{~ns}^{2}$

4

$\mathrm{Y}$

$(\mathrm{n}-1) \mathrm{d}^{10} \mathrm{ss}^{2}$

4

$\mathrm{Z}$

$\mathrm{ns}^{2} \mathrm{np}^{1}$

3