Question

Use the following table to answer the question:

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

Answer 1

Helium

Step-by-step explanation:

I understood the explanation the last guy gave

helium only had two neutrons

Answer 2

Step-by-step explanation:

Aluminium , mass no = no of proton + neutron = 27

atomic no = no of proton = 13

no of neutron = 27 - 13 = 14

Nitrogen , mass no = no of proton + neutron = 14

atomic no = no of proton = 7

no of neutron = 14 - 7 = 7

Helium , mass no = no of proton + neutron = 4

atomic no = no of proton = 2

no of neutron = 4 - 2= 2

fluorine , mass no = no of proton + neutron = 19

atomic no = no of proton = 9

no of neutron = 19-9 = 10