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The p-Block Elements

Short Answer Type

681. How is XeO₃, prepared? Write the related chemical equations. Draw the structure of XeO₃.

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682.
Explain why phosphorus forms PF₅ while nitrogen does not form NF₅.

Nitrogen is small in size and it cannot stabilize five flourine but phosphorus can stabilize five fluorine atom because of larger in size and it also have vacant d- orbitals. So due to having extra space phosphorus form PF₅ .

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683.

Accounts for the following:
NH₃ is stronger base than PH_3.

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684.

Accounts for the following:
HF is weaker acid than HI

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685.

Are all the five bonds in PCl₅,molecule equivalent? Justify your answer.

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686. Explain why ClF₃ exists whereas FCl₃ does not.

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687.

How would your prepare the following: (i) H₃PO₃, (ii) HI, (iii) HClO₄.

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688.

How are XeF₂, and XeF₄ prepared?

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689.

Draw the structures of the followings: (a) H₂SO₃, (b) H₂SO₄, (c) SO₃.

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690.

Account for the following:
The boiling points of noble gases increase with the increase in atomic number.

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Previous Year Papers

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Test Yourself

Short Answer Type

682. Explain why phosphorus forms PF5 while nitrogen does not form NF5.

682.
Explain why phosphorus forms PF₅ while nitrogen does not form NF₅.