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a
Spacing between energy levels n = 1 and n = 2 in hydrogen atom is greater than that of n = 2 and n = 3
b
Spacing between energy levels n = 1 and n = 2 in hydrogen atom is equal to that n = 2 and n = 3
c
Spacing between energy levels n = 1 and n = 3 in hydrogen atom less than that of n = 2 and n = 3
d
None
answer is A.
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Detailed Solution
En=−13.6Z2n2eVΔE1→2 = −13.622 + 13.612=10.2 eVΔE2→3 = −13.632 + 13.622=1.9 eV∴ On moving from lower value of n to higher value of n energy difference between successive energy levels decreases.