You visited us 1 times! Enjoying our articles? Unlock Full Access!

Aufbau Principle

Zn2+ salts ar...

Question

$Z n^{2 +}$ salts are white while $C u^{2 +}$ salts are coloured. Why?

Open in App

Solution

The electronic configuration of $Z n^{2 +}$ and $C u^{2 +}$ can be given as follow:
$Z n^{2 +}$ : $[A r] 3 d^{10}$
$C u^{2 +}$ : $[A r] 3 d^{9}$
Here $C u^{2 +}$ has one unpaired electron while $Z n^{2 +}$ have all paired electrons.
In d-block elements, the element which has an unpaired electron shows colour.
Thus $C u^{2 +}$ show colour.

Suggest Corrections

Similar questions

Z n^{2 +}

C u^{2 +}

M n

C r^{2 +}

C u^{2 +}

Z n^{2 +}

2 M n O_{2} + 4 K O H + O_{2} Δ \to

C r_{2} O_{7}^{2 -} + 14 H^{+} + 6 e^{-} \to

C u^{2 +}

Z n^{2 +}

S c^{3 +}

C r^{3 +}

3

T i^{4 +}

C r^{3 +}

Join BYJU'S Learning Program