Question

Element X belongs to $4^{th}$ period. It contains 18 and 1 electron in the penultimate and ultimate orbit. The X should be:

• A. Normal element
• B. Transition element
• C. Inert gas
• D. Innes transition elements

Answer 1

The correct option is B Transition element

It is a transition element as it is of the form $\left[Ne\right]3s^{2}3p^{6}4s^1$ which is Cu.