Question

Calculate the atomic number of an element whose mass number is 28 and number
of neutrons is 14. Also find the name of the element.

Answer 1

Concept:

Atomic mass=n+p

n=neutron

p=proton

e=electron

Solution:

n=14

amu=28

p=28-14=14

p=e

e=14

Atomic Number:

atomic number is number of protons or electrons=14

Element Name:

Silicon is the element which has Atomic Number 14