Question

Expalain why Gd³⁺ is clourless.

Answer 1

In Gd +3, there are 61 electrons. ... Hence no electrons are there in outer d orbital. Due to this it is colourless.

Answer 2

Answer:

No electrons present in outer d subshell, due to this its colorless.

Explanation:

The atomic number of Gd  is 64.

Here, given $Gd^{3+}$

that means, now Gd have 61 electrons.

The electronic configuration of $Gd^{3+}$ is

$4F^{7} ,5d^{1}, 6s^{2}$

Here , the 4F subshell is half filled that means 7 unpaired electrons so its behavior is para magnetism and there is no electrons present in outer d subshell, due to this its colorless.