Question

What's the valency of an element having 333 valence electrons in its outermost, M, shell?​

Answer 1

Answer:

Explanation:

By Z=3, we mean that the Atomic number (Z) of the element is 3.

Its electronic configuration is 2,1.

Hence, the valency of this element is 1 since the outermost shell has only one electron.

Therefore the element with Z=3 is Lithium.