Question

how many protons and neutrons and electrons. in 27 Al 3+

Answer 1

Atomic number of Aluminium Al is 13.

The number of protons present in an atom is equal it's atomic number.

So the number of protons present in Al is 13.

Here, 27 is the mass number
Mass number = no. of protons + no. of neutrons
number neutrons = 27 - 13

= 14 neutrons

For neutral atom number of protons is equal to number of electrons.

But here Al have 3+ charge so it have 3 electrons less.

Hence number of electrons =13-3 = 10

27 Al 3+ has

13 protons

10 electrons

14 neutrons