Chemistry

Chemistry, 03.10.2019 04:20, carolyn7938

Which of the following elements matches the criteria below?

1. has 3 energy levels

2. found in group 7a

a. f

b. cl

c. ar

d. mn

answer

Answers: 3

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Do you know the correct answer?

Which of the following elements matches the criteria below?

1. has 3 energy levels

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