Which of the given elements A, B, C, D and E with atomic number 2, 3, – McqOptions

MCQOPTIONS

1.	Which of the given elements A, B, C, D and E with atomic number 2, 3, 7, 10 and 30 respectively belong to the same period?
A.	B, C, D
B.	A, D, E
C.	B, D, E
D.	A, B, C
Answer» B. A, D, E

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