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WASSCE

Which of the following sets of elements are arranged in order of decreasing atomic size in the Periodic Table?

A.
6C, 4Be, 7N, 8O
B.
4Be, 6C, 7N, 8O
C.
8O, 7N, 6C, 4Be
D.
7N, 8O, 6C, 4Be

Answer: B

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