Which of the following statement concerning ionisation energy is not correct?

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The IE2 is always more than the first.

Within a group, there is a gradual increase in ionisation energy because nuclear charge increases.

Ionisation energies of Be is more than B.

Ionisation energies of noble gases are high.

answer is B.

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Detailed Solution

Generally the IE decreases down the group due to increase in atomic size.

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