Identify the element that contains the following number of protons and neutrons: 9 protons and 9 neutrons.

Identify the element that contains the following number of protons and neutrons: 9 protons and 9 neutrons.

A)F

B)N

C)O

D)C

Solution: Atom number of an element is equal to the number of protons and represents the identity of that element. We need to find an element on the Periodic Table that has an atomic number of 9. Most periodic tables have atomic numbers at the bottom. Choice A is correct.

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