Question

An element has 20 electrons and 20 neutrons. It is electrically neutral

The atomic number of elements is?

Answer 1

Atomic number { Z}: Total number of an electron or proton in an atom is considered an atomic number.

• The chemical properties of an element are determined by the number of protons in the nucleus.
• It is also known as the nuclear charge number.
• Atomic number = total number of electrons or a total number of protons.
• Thus, the atomic number is 20 because in a given element number of electrons is 20

So, That atomic number of the element is 20 and the element is calcium {Ca}.