A) \[18\] and \[22\]
B) \[22\] and \[18\]
C) \[20\] and \[20\]
D) \[40\] and \[18\]
Correct Answer: A
Solution :
Given, electronic configuration \[=1{{s}^{2}},2{{s}^{2}}2{{p}^{6}},3{{s}^{2}}3{{p}^{6}}\] and atomic weight \[=40\] Hence, atomic number \[=2+2+6+2+6\] \[=18\] Number of neutrons = atomic weight - atomic number \[=40-18=22\]You need to login to perform this action.
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