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Which of the following elements are non-reactive because their outer electron energy levels are full? A. Aluminum B. Carbon C. Krypton D. Uranium

Which of the following elements are non-reactive because their outer electron energy levels are full? A. Aluminum B. Carbon C. Krypton D. Uranium
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2 votes
Which of the following elements are non-reactive because their outer electron energy levels are full?

A. Aluminum
B. Carbon
C. Krypton
D. Uranium

User Gnark
by
7.3k points

1 Answer

3 votes
It would be Krypton, one of the noble gases. 
User Sergii Rudchenko
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