Question

what is energy ??

have a great day​

Answer 1

Answer:

ability to do work is called energy

Answer 2

Explanation:

Each shell Can Contains Only

A fixed number Of Electrons : The First Shell Can hold Up to two Electrons, The second Shell Can Hold Up to eight (2+6) electrons the third Shell Can Hold Up to 18 (2+6+10)

and So On. The general Formula Is that the nth shell Can in principle hold Up to 2(n2) electrons.