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ira [324]
4 years ago
8

What is an electron that occupies the outermost energy level or shell of an atom called?

Chemistry
1 answer:
natta225 [31]4 years ago
4 0
It's called a valence electron

And the outermost shell would be called a valence shell.
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Calcum chloride contains only calcum and chloride What is the fomula for this compound? fou need the Peodie Table for thia quest
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Answer:

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Explanation:

Calcium is the element of the group 2 and period 4 which means that the valence electronic configuration is [Ar]4s^2.

Chlorine is the element of the group 17 and period 3 which means that the valence electronic configuration is [Ne]3s^23p^5.

Thus, calcium losses 2 electrons to 2 atoms of chlorine and these 2 atoms of chlorine accepts each electron to form ionic bond. This is done in order that the octet of the atoms are complete and they become stable.

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Cross multiplying the valency, We get, CaCl_2

Thus, the formula of calcium chloride is CaCl_2.

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