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What is the number of electron of Mg?
A. 12
C. 36
B. 24
D. 50
To compute for the number of neutron of ar​


Sagot :

Answer:

A. 12

Explanation:

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Answer:

A. 12

Explanation:

Magnesium has two valence electrons. Magnesium is element 12 and belongs to Group 2 of the Periodic Table. An element in Group 2 has two valence electrons. Also, the electron configuration of Mg is 1s² 2s²2p⁶ 3s² or [Ne]3s².