Question

Number of orbitals required to place all electrons of an element with atomic no 30
A .13
B.15
C.9​

Answer 1

Answer:

option B is correct

Explanation:

atomic number =30

electronic configuration =1s^22s^22p63s^23p^6

4s^23d^10

so in s subshell there are 1 orbital

in p subshell there are 3 orbital

in d subshell there are 5 orbital

so there are 4 s subshell ,2 p subshell ,1 d subshell

so 4 ×1 =4 ,2×3=6, 1×5=5

15 orbitals required

hope you understand