Answer the following Question Down Below...

Chemistry

1 answer:

bonufazy [111]2 years ago

5 0

The mass number of the atom is 21, the atomic number is 9, and the element is Fluorine. There are 9 protons, 9 electrons, 12 neutrons, and the elemental symbol is F.

<h3>Properties of an atom</h3>

For every atom:

Protons and neutrons are located in the nucleus and the addition of both equals the mass number of atoms.
Electrons are located outside the nucleus, in orbitals.
Neutral atoms have the same number of electrons and protons

In the diagram:

Number of electrons = 9

Number of protons = 9

Number of neutrons = 12

Mass number = 12 + 9

= 21

Atomic number = number of protons

= 9

Element with atomic number 9 = Fluorine

Symbol of the element = F

More on atoms can be found here: brainly.com/question/1566330

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