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19 October, 22:38

When calculating total valence electrons, extra electron pairs are added to which atom?

a. Central

b. Inside

c. Outside

d. Upper

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Answers (1)
  1. 20 October, 01:00
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    When calculating total valence electrons, extra electron pairs are added to the Outside of an atom. The answer is letter C. Suppose you have a compound of CCl4. You know that chlorine can only share 1 electron because 7 of its electrons are filled. Also, in carbon, it can only share 4 electrons because 4 of it are already filled. That is why carbon needs four chlorine to form CCl4.
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