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Physical Properties of Boron Family

The element w...

Question

The element which has highest first iozination energy in the periodic table is:

A

H

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B

R n

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C

F

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D

H e

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Solution

The correct option is D $H e$
$H e$ has the highest first ionization energy in the periodic table. The ionization energy decreases from top to bottom and increases from left to right.
$H e$ has highest and $F r$ has lowest Ionization energy.

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