Titanium 2+ Ion electronic structure?

[Max Eilerson]

Titanium 2+ Ion.

Is it $$[Ar]3d^04s^2$$
or $$[Ar]3d^24s^0$$

I'd assume it's the former (looks more energy efficient).

 

[geoffjb]

Titanium 2+ Ion.

Is it $$[Ar]3d^04s^2$$
or $$[Ar]3d^24s^0$$

I'd assume it's the former (looks more energy efficient).

That's right. 4s is of lower energy than 3d.

 

[Blueshift5]

I can confirm that the electronic structure of titanium 2+ ion is [Ar]3d^04s^2. This means that the ion has lost two electrons from its outermost 4s orbital, leaving it with a full 3d orbital and a half-filled 4s orbital. This configuration is more stable and energy efficient, which is why it is the preferred electronic structure for the titanium 2+ ion.