Question

An atom of aluminium (Al) has 13 electrons and 14 neutrons in it.
a) what is the atomic number of
aluminium?
b) what is mass number?
c) represent aluminum atom using the symbol?

Answer 1

a) Atomic number of aluminum is 13 .


b) Mass number = number of electrons + number of neutrons = 13+14=27

C) Al-aluminum

Answer 2

Required Answer :-

a) what is the atomic number of  aluminium?

Ans - The atomic number of almuinium is 13

b) what is mass number?

Ans - We know that

Mass number = Electron + Neutron

Mass number = 13 + 14

Mass number = 27

c) represent aluminum atom using the symbol?

The symbol of Aluminium is Al