A single atom of an element has 21 neutrons, 20 electrons, and 20 protons, which elementis it?

Question

asked Apr 5, 2021 44.3k views

1 Answer

Carren · Answer 1 · 2021-04-09T03:39:04+0000

Answer:

Calcium

Step-by-step explanation:

The number of protons is the atomic number of the element. Number 20 on the periodic table is Calcium.