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Amiraneli [1.4K]
3 years ago
14

Which element has a complete valence electron shell?

Chemistry
2 answers:
Norma-Jean [14]3 years ago
8 0
The element that has a complete valence electron shell is argon (Ar) since it is a noble gas in the last group on the periodic table.
sertanlavr [38]3 years ago
8 0

The answer is argon (Ar)

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The magnesium atom loses 2 electron to the 2 atoms of chlorine. The 7 valency electrons of each chlorine atom will now be 8 to attain stable configuration. The final compound is written as MgCl2.

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Ionic compounds are compound formed from the transfer of electron(s). One atom of the element loses electron(s) while the other atom gains electron(s).

The compound Magnesium chloride is an ionic compound . The bond between an atom of magnesium and 2 atoms of chlorine is an ionic bonding.

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