Question

The valence shell of the element X contains 2 electrons in a 5s subshell. Element X also has a partially filled 4d subshell. What type of element is X?

Answer 1

Element `X` is a `5^(th)` period Transition element.

Explanation:

Since, `5s` orbital is fully filled, so the element `X` lies in `5^(th)` principal shell, i.e. it lies in the `5^(th)` period.

Now, since the `4d` subshell is partially filled, so it is certain that the element `X` is a `5^(th)`period transition element.