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Standard X
Chemistry
Ionisation Energy
Which of the ...
Question

Which of the following has maximum ionization enthalpy ?

A
K
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B
Na
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C
Mg
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D
Be
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Solution

The correct option is D Be
We know that the ionization energy decreases down a group and increases from left to right along a period. Hence, beryllium has the maximum ionization enthalpy in this case.

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