question_answer

The values for all the quantum numbers for 15th electron of chlorine are

A) \[n=3,\,\,l=1,\,\,m=0,\,\,s=-1/2\]

B)        \[n=4,\,\,l=2,\,\,m=0,\,\,s=+1/2\]

C)        \[n=3,\,\,l=1,\,\,m=+1,\,\,s=+1/2\]

D)        \[n=2,\,\,l=0,\,\,m=0,\,\,s=+1/2\]

Correct Answer: C

Solution :

Electronic configuration of chlorine is\[_{17}Cl=1{{s}^{2}},\,\,2{{s}^{2}},\,\,2{{p}^{6}},\,\,3{{s}^{2}}3{{p}^{5}}\]                 \[n=3\]                 \[l=1\]                 \[m=+1,\]and\[s=+1/2\]