Question

Question #c796f

Answer 1

10

Explanation:

Element 13 with 13 protons is Aluminum. To become stable Al will lose its three valance or outmost electrons. leaving the atom with a +3 charge

Aluminum starts with 13 protons and 13 electrons. Its electron configuration is `1s^2 2s^2 2p^6 3s^2 3p^1`

When Aluminum loses its third level electrons `3s^2 3o^1` it i left with the electron configuration of Neon `1s^2 2s^2 2p^6` which is stable. This configuration has 10 electrons.

Another way to solve the problems is by subtraction. Aluminum starts with 13 electrons and loses 3 electrons.

`13-3 = 10`

Aluminum as a `3+` ion will have 10 remaining electrons.