Which of the following elements shown as pairs with their atomic numbers belong to the…
Chemistry · Class 11 · CBSE — Classification of Elements and Periodicity in Properties
Which of the following elements shown as pairs with their atomic numbers belong to the same period?
- Z = 19 and Z = 38
- Z = 12 and Z = 17
- Z = 11 and Z = 21
- Z = 16 and Z = 35
Answer
(B) Z = 12 and Z = 17
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