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Statement 1 : H2 molecule is more stable than He-H molecule.

Statement 2 : The antibonding electron in He-H molecule decreases the bond order there by the stability.

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By Expert Faculty of Sri Chaitanya
a
Both Statement 1 and Statement 2 are true.
b
Statement 1 is true and Statement 2 is false.
c
Statement 1 is false and Statement 2 is true.
d
Both Statement 1 and Statement 2 are false.

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detailed solution

Correct option is A

Bond order = 12(nb-na) ;where, nb = no.of bonding electrons  ;  na = no.of anti bonding electronsBond order for H2 =1  σ1s2 σ1s2*Bond order for He−H=12   σ1s2 σ1s1*


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Statement 1 : Nascent hydrogen is more reactive than molecular hydrogen.

Statement 2 : Nascent hydrogen is associated with more energy.

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