Question

Match the items in List 1 with those in List 2

Answer 1

Cr atomic number 24, half filled configuration.1s${}^2$ 2s${}^2$ 2p${}^6$ 3s${}^2$ 3p${}^6$ 3d${}^5$ 4s${}^1$

Cu atomic number 29, half filled configuration.1s${}^2$ 2s${}^2$ 2p${}^6$ 3s${}^2$ 3p${}^6$ 3d${}^{10}$ 4s${}^1$

$F{e}^{+3}:\left[Ar\right]d^5$ unpaired elctrons =5

$Z{n}^{+2}:\left[Ar\right]d^{10}$,1s${}^2$ 2s${}^2$ 2p${}^6$ 3s${}^2$ 3p${}^6$ 3d${}^{10}$