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241.

Give the reason for the following: Bond order in N₂ is 3 whereas it is 2.5 in NO ?

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242.

Give the points of resemblance and points of difference between valence bond theory and molecular orbtial theory.

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243.

What is hydrogen bond? How is it formed?

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244.

What are the conditions for hydrogen bonding ?

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245.

Water is a liquid while hydrogen sulphide is a gas. Explain.

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246.

Out of NH₃ and PH₃, which has higher boiling point and why?

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247.

Nitrogen and chlorine have the same electronegativity but only former shows intermolecular hydrogen bonding. Discuss.

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248.

What are the types of hydrogen bonding? Give examples.

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249.

What are the conditions for the formation of intramolecular hydrogen bonding?

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250. O-Nitrophenol is steam volatile, while p-nitrophenol is not. Explain.
Or
Boiling point of o-nitrophenol is less than p-nitrophenol. Explain.

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