The ion 27al3+ contains which combination of protons, neutrons, and electrons?

This ion has 13 protons, 14 neutrons and 10 electrons.

Explanation:

An ion is formed when an atom looses or gains electron.

Atomic number is defined as the number of protons or electrons that are present in a neutral atom.

Atomic number = number of protons = number of electrons

Atomic mass is defined as the sum of number of protons and neutrons that are present in an atom.

Atomic mass = Number of protons + Number of neutrons

For the given representation of ion, which is:  

We are given:

Atomic number = Number of protons = 13

Number of electrons = Number of protons - charge = 13 - (+3) = 10

Mass number = 27

Number of neutrons = Atomic number - Mass number = 27 - 13 = 14

Hence, this ion has 13 protons, 14 neutrons and 10 electrons.

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