Question

magnesium has two valence electrons in the which shell​

Answer 1

Answer:

Magnesium has two valence electrons.

Explanation:

The electron configuration for magnesium is shown below.

$1 {s}^{2} 2 {s}^{2} 2p {}^{6} 3s {}^{2}$

The valence elctrons are the electrons in the third energy level (3s sublevel has two electrons in an atom of Mg)

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Answer 2

Answer:

M shall

Explanation:

Magnesium has 2 valence electrons in the (M) shall.