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Rom4ik [11]
3 years ago
7

How many core electrons does magnesium (Mg) have?

Chemistry
2 answers:
STatiana [176]3 years ago
6 0
Hence Mg has 10 core electrons and 2 valence electrons. The number of core electrons depends on the period (row) in which the element is found.
OLga [1]3 years ago
6 0

Answer:

10  

Explanation:

Mg is element No. 12.

It has 12 electrons, with a shell configuration of 2, 8, 2.

The last two electrons are the valence electrons; the remaining 10 electrons are the inner or core electrons.

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