A) Melting of sodium metal
B) Melting of ice
C) Melting of ammonium chloride
D) Formation of atomic hydrogen
Correct Answer: D
Solution :
\[{{H}_{2}}\,\xrightarrow[104\,\,kcal]{electric\,\,Arc}\,\,\underset{Atomic\,\,Hydrogen}{\mathop{2H}}\,\] \[{{H}_{2}}\] contains covalent bond.
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