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Grade 11Modern Physics

What is the 2nd excitation potential of He+ ion?
A. 10.2 V
B. 3.4 eV
C. 13.6 eV
D. 48.4 V

Profile image of Ushma
8 Years agoGrade 11
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1 Answer

Profile image of Khimraj
7 Years ago
for 2nd exitation potential of He+
Z = 2
n= 2
E = 13.6*Z2/n2 = 13.6 eV
Hope it clears...............................