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Electron Gain Enthalpy

Q. Smallest a...

Question

Q. Smallest among these species is:

Options:

A. Lithium ion

B. Hydrogen

C. Lithium

D. Helium

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Solution

Answer is helium

Atomic radius of hydrogen is 53 pm

And that of helium is 31pm
And of lithium is 152 pm
Ionic radius of Li+ is 74 pm

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