Question

Atomic number and mass number of an element are 18 and 40 respectively. Identify the elements and write the number of electrons and neutrons present in its atom.Show the schematic atomic structure of the atom.

Answer 1

Calcium has atomic mass 40. Argon has atomic mass 18

Answer 2

Hey mate here is your answer....

The elements 18 is Argon.

and the atomic mass which has 40 is calcium.

The atomic number of clacium is 20.

Argon has 18 electrons and and 18 neutons and calcium has 20 electrons and 20 neutrons.

Hope it will help you.....