the-first-second-and-third-shells-and-the-4s-subshell-of-an-atom-are-filled-how-

Question

The first, second, and third shells and the 4s subshell of an atom are filled. How many electrons are present in the atom? What is the identity of the element?

Accepted Answer

The atom contains 30 electrons.The element is Zinc.

Answer

The atom contains 29 electrons.The element is Copper.

Answer

The atom contains 28 electrons.The element is Nickel.

Answer

The atom contains 27 electrons.The element is Cobalt.