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The p-Block Elements

Short Answer Type

561. Why do noble gases have comparatively large atomic sizes?

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Long Answer Type

562. List the uses of neon and argon gases.

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Short Answer Type

563. State reasons for each of the following happenings:
(i) Sulphur vapour exhibits some paramagnetism.
(ii) Unlike phosphorus nitrogen shows little tendency for catenation.

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564. Give reasons for the following:
CN^– ion is known but CP^– is not known.

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565. Give reasons for the following:
NO₂ demerises to form N₂O₄

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566. Give reasons for the following:
ICl is more reactive than I-I

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567. SF₆ is a well known compond but SCl₆ is not known. Explain?

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568. Assign an appropriate reason for each of the following statements:
SiF₆²^– is known but SiCl₆²^– is not known.

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569. Assign an appropriate reason for each of the following statements:
More metal fluorides are ionic in nature than metal chlorides.

Metal fluoride are ionic in nature than metal chloride becuase fulorine is more electronegative than 'Cl', therefore, fluorides are more ionic than metal chlorides.

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