Question

If an atom of an element contains 17 electrons and 18 neutrons, find the number of protons, atomic number and mass number of the element.

Answer 1

Given
no of electrons = 17
No of nuetrons = 18

no of protons = no of electrons

So no of protons = 17

Atomic number = no of electrons = no of protons

So atomic number = 17

Mass number = atomic no + no of nuetrons

So
Mass number= 17+ 18 =35