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Do the Following Represent Elements in a Group, a Period

Question 74

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Do the following represent elements in a group, a period, or neither?

Premises:
O,S,Se
Li,C,F
F,S,P
He,H,I
Li,Na,K
Responses:
group
period
neither

Correct Answer:

O,S,Se
Li,C,F
F,S,P
He,H,I
Li,Na,K
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