Question

How many neutrons of atomic mass is 31 and atomic number is 12

Answer 1

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As we know, Number of protons = Atomic Number

So,

• Number of protons = 12

And, Atomic mass = Number of protons + Number of Neutrons (N)

therefore ~

• 31 = 12 + N

• N = 31 - 12

• N = 19

Number of Neutrons = 19