Atomic Structure Question 123
Question: The energy of the electron in the first orbit of $ H{e^{+}} $ is $ -871.6\times {10^{-20}}J $ . The energy of the electron in the first orbit of hydrogen would be [Roorkee Qualifying 1998]
Options:
A) $ -871.6\times {10^{-20}}J $
B) $ -435.8\times {10^{-20}}J $
C) $ -217.9\times {10^{-20}}J $
D) $ -108.9\times {10^{-20}}J $
Show Answer
Answer:
Correct Answer: C
Solution:
$ {E_{1H{e^{+}}}}={E_{1H}}\times z^{2} $
$ -871.6\times {10^{-20}}=E_{1H}\times 4 $
$ {E_{1H}}=-217.9\times {10^{-20}}J $
