Question

An atom of an element has 2 electrons in the valency shell and two
consecutive inner shells have 8 electrons each. Calculate the atomic
number of the element.

Answer 1

Answer:

The atomic number will be 2.

Answer 2

Explanation:

Electronic configuration of atom of element which has two electrons in the valence shell and two consecutive inner shells have 8 electrons each is 2,8,8,2. And hence atomic number is element=20