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What is the half-life of atomic hydrogen?

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in Chemistry – Class 11 by (148k points)
What is the half-life of atomic hydrogen?

(a) 0.33s

(b) 1.33s

(c) 2.33s

(d) 3.33s

I have been asked this question in class test.

This question is from Dihydrogen & H2 topic in section Hydrogen of Chemistry – Class 11

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Best answer
Right answer is (a) 0.33s

The best I can explain: Molecular hydrogen in presence of electric Arc is converted into atomic hydrogen. The enthalpy change for the reaction is 105.4 kcal/mol. This newly formed atomic hydrogen is very reactive and its half-life period is 0.33 seconds.

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