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I am the most reactive metal in Period 4. krypton potassium sodium bromine
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4 votes
I am the most reactive metal in Period 4.

krypton
potassium
sodium
bromine

User SigmaXD
by
8.0k points

1 Answer

5 votes
Potassium is the answer :)
User Talya S
by
7.9k points
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