Chemistry, 05.11.2020 18:30, salvadorperez26

What element in group 6 has 3 shells/energy levels around the nucleus A. oxygen
b. selenium
c. thallium
d. sulfur

(Please do not anwser if you do not know for sure, thank you!.)

Answers: 2

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What element in group 6 has 3 shells/energy levels around the nucleus A. oxygen
b. selenium