Question

how many neutrons does fluorine have?

Answer 1

Fluorine has an atomic number of 9 and a mass number of 19.

The atomic number tell us how many protons and electrons an atom has. To tell how many neutrons we must subtract the atomic number from the mass number.

Mass No. - Atomic No. = no. of Neutrons

Fluorine
Protons & Electrons = 9
Neutrons = 10

Answer 2

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