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Ananya Shree

Class 12th
Chemistry
2 years ago

The first ionization enthalpies of 5d – series elements is higher than those of 3d and 4d series elements why?

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Muskan Anand

2 years ago

Because of weak shielding by 4f4f electrons, the first ionisation energy of 5d5d  elements is higher than that of 3d3d elements. This is owing to the greater effective nuclear charge acting on outer valence electrons.

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