Question

atomic number and atomic mass number definition​

Answer 1

Answer:

the no.of protons present in an element is known as atomic number

and the mass of an element is known as atomic mass number

Answer 2

Answer:

it is the number in which it is number of the element like helium atomic no.2like that but atomic mass is the double of atomic no like carbon atomic no.6but atomic mass 12 because it is double 6+6=12