Q.

Statement I  : Standard molar enthalpy of formation of H2(g) is zero

Statement II : For diatomic molecules' enthalpy of atomization is also bond dissociation enthalpy

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a

if both statement I and statement II are incorrect

b

if statement I is incorrect but statement II is correct

c

if statement I is correct but statement II is incorrect

d

if both statement I and statement II are correct 

answer is A.

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Detailed Solution

H2(g)2H(g)H=435.0kJ/mole

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Statement I  : Standard molar enthalpy of formation of H2(g) is zeroStatement II : For diatomic molecules' enthalpy of atomization is also bond dissociation enthalpy