Question

Draw a series of pictures, similar to the ground states of $Ca,Ni,As$, and $Kr$.

Short answer

The ground states of $Ca\left(Z=20\right)$is $1s^{2}2s^{2}2p^{6}3s^{2}3p^{6}4s^2$, $Ni(Z=28)$is $1s^{2}2s^{2}2p^{6}3s^{2}3p^{6}4s^{2}3d^8$, $As\left(Z=33\right)$is $1s^{2}2s^{2}2p^{6}3s^{2}3p^{6}4s^{2}3d^{10}4p^3$and$Kr\left(Z=36\right)$is$1s^{2}2s^{2}2p^{6}3s^{2}3p^{6}4s^{2}3d^{10}4p^6$.

Step-by-step solution

Given Information

We need to find the ground states of $Ca,Ni,As$and$Kr$.

Simplify

Electron configuration for $Ca\left(Z=20\right)$is :

$1s^{2}2s^{2}2p^{6}3s^{2}3p^{6}4s^2$

Electron configuration for $Ni(Z=28)$is :

$1s^{2}2s^{2}2p^{6}3s^{2}3p^{6}4s^{2}3d^8$

Electron configuration for $As\left(Z=33\right)$is :

$1s^{2}2s^{2}2p^{6}3s^{2}3p^{6}4s^{2}3d^{10}4p^3$

Electron configuration for $Kr\left(Z=36\right)$is :

$1s^{2}2s^{2}2p^{6}3s^{2}3p^{6}4s^{2}3d^{10}4p^6$