The ionisation energies for `B.Tl` and In are X.Y and ZK cal/mol respectively. Choose the correct relationship between them-
A. `Z gt X = Y`
B. `X gt Y gt Z`
C. `X lt Y lt Z`
D. `X lt Y lt gt Z`

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Correct Answer - B
`B gt In lt Tl`
`X gt Y gt Z`

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