Question

Calculate Atomic number and Atomic mass number of an element which
Contains 1l protons and 12 neutrons

Answer 1

GIVEN, number of protons =11

number of neutrons = 12

To find , atomic number and atomic mass number

SOLUTION ,

Atomic number of an element is

=number of protons on an atom or number of electrons

here atomic number = 11

Atomic mass number of an element is

= number of protons + number of neutrons

= 11 + 12

= 23