Q.

The minimum energy required to take out the only electron from the ground state of Li++ is

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a

13.6 eV

b

122.4 eV

c

25.3 eV

d

67.9 eV

answer is B.

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Detailed Solution

Ionization energy is given as:E = 13.6 Z2 eVFor Li++, Z = 3E = 13.6 × 9E = 122.4 eV
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