Question

define the term atomic number of an atom of an atom a has an atomic number 11 state the number of protons and neutrons it contains ​

Answer 1

Protons are present in the nucleus of an atoms. It is the number of protons of an atoms , which determine it's atomic number.

It is denoted by 'Z'

All atoms of an elements are defined by the number of protons they possess.

For hydrogen , Z=1 , because in hydrogen atom , only one proton is present in the nucleus .

Atomic number=Protons=Electrons....

An element which contains 11 Atomic number is Sodium...

The number of protons in sodium - 11

The number of Neutrons in sodium - 12

The number of Electron in Sodium - 11