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Hydrogen has _____________ ionization enthalpy.

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in Chemistry – Class 11 by (148k points)
Hydrogen has _____________ ionization enthalpy.

(a) high

(b) low

(c) zero

(d) no

The question was posed to me in semester exam.

I'd like to ask this question from Position of Hydrogen in the Periodic Table in portion Hydrogen of Chemistry – Class 11

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The correct answer is (a) high

The best I can explain: Though hydrogen is placed in the first group which is of alkali metals, it has a very high ionization enthalpy this is because it has a characteristic of a halogen as well. We can say that hydrogen is an alkali metal and a halogen at a time.

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