If a metal has a valancy of 2, and it contains 3 shells, what is the metal atom?
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Answer:
The metal is Magnesium Mg
Explanation:
Magnesium has an atomic number of 12
It's electronic configuration 2, 8, 2
Which means it has three shells
To achieve inert gas or noble gas stability it needs to complete its octet for which it will simply lose 2 electrons
So its valency will become 2+
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IT WILL BE MAGNESIUM!
ATOMIC NUMBER OF MAGNESIUM IS 12
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