1.

The electronic configuration of an element `X` is `1s^(2),2s^(2),2p^(6),3s^(2),3p^(3)`. What is the atomic number of the element which is just below the element `X` in the periodic table?A. 33B. 34C. 31D. 49

Answer» Correct Answer - A
`33-1s^(2)2s^(2)2p^(6)3s^(2)3p^(6)3d^(10)4s^(2)4p^(3)`


Discussion

No Comment Found

Related InterviewSolutions