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Which of the followig substances willl h...

Which of the followig substances willl have non-zero standard enthalpy of formation ? `DeltaH_(f)^(@)ne0`

A

`H^(+)(aq)`

B

`C_((graphite))`

C

`Rn_((gas))`

D

`Sn_((grey))`

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The correct Answer is:
D
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