Question

if Mg²+ has 12 protons and 12 neutrons, what is its atomic number and mass number

Answer 1

Answer:

Atomic Number is 12

Mass Number is 24

Explanation:

Atomic Number is the number of protons found in the nucleus of an atom

Mass number is the total number of protons and neutrons present in the nucleus . it is also known as the nucleon number.

Answer 2

Answer:

Explanation:

then atomic number = no of proton = 12

atomic mass =mass number =  number of proton + no of neutrons = 12 + 12 = 24