Question

Which of the following sets of atomic numbers corresponds to elements belonging to s, d, f, p blocks respectively?

• A. 35, 37, 29, 70
• B. 35, 29, 70, 37
• C. 37, 29, 70, 35
• D. 37, 29, 35, 70

Answer 1

The correct option is C 37, 29, 70, 35

Electronic configuration of an element with

atomic number 37 is $\left[Kr\right]5s^1.$

29 is $\left[Ar\right]3d^{10}4s^1$

70 is $\left[Xe\right]4f^{14}5d^{0}6s^2.$

35 is $\left[Ar\right]3d^{10}4s^{2}4p^5.$

Hence, 37, 29, 70 and 35 belong to s, d, f and p respectively.