MediumChemistry1
+4 / -1
The ionization energy of He+ is 19.6 × 10–18 J atom–1. The energy of the first stationary state of Li+2 will be -
A
21.2 × 10–18 J/atom
B
44.10 × 10–18 J/atom
C
63.2 × 10–18 J/atom
D
84.2 × 10–18 J/atom
Explanation
E1 for Li+2 = E1 for H × Z^2(Li) = E1 for H × 9. E1 for He+ = E1 for H × Z^2(He) = E1 for H × 4. Calculating the ratio gives 44.10 × 10–18 J/atom.
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