How many core electrons does magnesium (Mg) have?
2 answers:
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.
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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