First slide

Hydrogen

Question

H₂ gas can be converted to $H (1 s^{1})$ atoms by

Moderate

A

5000 K temperature
B

U.V. radiations
C

Silent electric arc
D

All of these

Solution

H₂ dissociates to H (1s¹) atoms at 5000 K temperature, by silent electric arc between tungsten electrodes and by U.V. radiations to the extent of 95.5%. At 2000 K, this dissociation is only about 0.081%.

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