Use the following table to answer the 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

Aluminium have the most neutrons in the nucleus.

Explanation:

The number of neutrons in the nucleus can be calculated by subtraction of the atomic number from the mass number.

neutrons in aluminium nucleus = 27 - 13 = 14

neutrons in nitrogen nucleus = 14 - 7 = 7

neutrons in helium nucleus = 4 - 2 = 2

neutrons in fluorine nucleus = 19 - 9 = 10

atomic mass = 39

number of neutrons = 20

number of protons= 19

electronic configuration = 1s2 2s2 2p6 3s2 3p6 4s1

the number of electron in first shell = 2

number of electrons in n=3 shell = 8

the answer is d.) potassium