Physics
NULL
Medium
Question
Energy of the 4th orbit in a H-atom is______________?
A
13.60 eV
B
3.40 eV
C
0.85 eV
✓ Official correct answer
D
1.51 eV
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A
13.60 eV
No member explanations yet for this option.
B
3.40 eV
No member explanations yet for this option.
C
0.85 eV
No member explanations yet for this option.
D
1.51 eV
No member explanations yet for this option.
Explanation
Using En = -13.6/n^2 eV, the energy of the 4th orbit is E4 = -13.6/16 = -0.85 eV (magnitude 0.85 eV).
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