Question

which of the following elements LOSES 2 electron in order to attain an octet?

Answer 1

Answer:

Magnesium (Mg)

Explanation:

Because mg have 12e and electronic configuration is 1s²2s²2p⁶3s² so it loses 2e to gain electronic configuration 1s²2s²2p⁶..

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Answer 2

Answer:

The alkali earth metals (group 2), such as, Mg or Sr lose two e-'s to attain the configuration of Ne. Thus, the group 2 metals tend to have a +2 charge...