IP values of Sc, Y and La are in the order:

Sc > Y > La

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Sc < Y < La

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Sc = Y = La

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La > Sc > Y

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Solution

The correct option is B Sc > Y > La
IP values of Sc, Y and La are in the order $S c > Y > L a$
On moving down the group, the IP values decreases as the effective nuclear charge decreases due to poor shielding by inner electrons.

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