1.

The period number and group number of element having atomic number 50 are respectively :A. `6^(th), 12^(th)`B. `5^(th), 15^(th)`C. `6^(th), 14^(th)`D. `5^(th), 14^(th)`

Answer» Correct Answer - D
`Z=50=[Kr] 4d^(10)5s^(2)5p^(2)`
Period no. = 5
Group no. = 14


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