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A potassium atom (atomic number 19) and a bromine atom (atomic number 35) can form a chemical bond through a transfer of one electron. The potassium ion that forms has 18 electrons.

What best describes the bromide ion that forms?

It is a negative ion that has one less valence electron than a neutral bromine atom.
It is a positive ion that has one less valence electron than a neutral bromine atom.
It is a negative ion that has one more valence electron than a neutral bromine atom.
It is a positive ion that has one more valence electron than a neutral bromine atom.

2 Answers

5 votes
Bromide ion(Br-) is an anion(negative ion) that has one more electron than a neutral bromine atom.
User Andreas DM
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5 votes
It is a negative ion that has one more valence electron than a neutral bromine atom. so the answer is C.
User Dsetton
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