Question

Element

Mass Number

Atomic Number

Aluminum

27

13

Nitrogen

14

7

Helium

4

2

Fluorine

19

9



Which element has the most neutrons in the nucleus?
Aluminum
Nitrogen
Helium
Fluorine

Answer 1

Aluminum

Step-by-step explanation:

An atom of any elements has an outer electron and a proton and neutron located in the nucleus . The proton and neutron found in the nucleus of an atom determine the mass number of an element. The mass number of an element is the sum of the proton(atomic number) and the neutron number.

Mathematically,

Mass number = proton number(atomic number) + neutron number

Therefore,

neutrons number = mass number - proton number

Aluminium has the highest neutron

neutron = 27 - 13 = 14

Neutron of aluminium = 14