Question

What is shorthand electron configuration for V?

Answer 1

For the element vanadium, `Z=23`, and thus.......`[Ar]3d^(3)4s^2`.

Explanation:

.......and thus we have to accommodate `23` electrons.

We build on an argon core, which accounts for 18 electrons:

`[Ar]3d^(3)4s^2`.

The way I always used to remember this was to recall that `V` was the Roman numeral `5`, i.e. 5 valence electrons.