Homework Answers
•Neutral atom=> Number of electron = number of proton
Electronic configuration:-
1s2 2s2 2p6 3s2
Total number of electron = 12
Number of proton = 12
Atomic number = 12
Element = Magnesium
[]
Chemical symbol of atom = Mg
Number of electrons in an atom = 12
Number of 3d electrons = 0
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