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

Al atom has 13 protons, 13 electrons.

Mass number = number protons + number neutrons

27 = 13 + number neutrons,

number neutrons = 27 - 13 = 14 neutrons.

Ion Al³⁺, lost 3 electrons.

So, in Al³⁺, 13-3=10 electrons.

So, ion Al³⁺ has 13 protons, 14 neutrons, 10 electrons.