Chemistry > 2005 > 1
WASSCE
The electronic configuration of an element X is 1s2 2s2 2p6 3s2 3p4. It can be deduced that X
A.
belongs to group 6 of the Periodic Table
B.
belongs to period IV of the Periodic Table
C.
has 3 unpaired electrons in its atom
D.
has relative molecular mass of 16
Answer: A
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