A) \[-871.6\times {{10}^{-20}}\]
B) \[-435.8\times {{10}^{-20}}J\]
C) \[-217.9\times {{10}^{-20}}J\]
D) \[-108.9\times {{10}^{-20}}\]
Correct Answer: C
Solution :
[c] \[{{E}_{{{1}_{He}}}}+={{E}_{{{1}_{H}}}}\times {{Z}^{2}}\] \[\therefore -871.6\times {{10}^{-20}}={{E}_{l}}_{_{H}}\times 4\] \[\therefore {{E}_{l}}_{_{H}}=-217.9\times {{10}^{-20}}J\]You need to login to perform this action.
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