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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.

CN^–ion is known because nitrogen is small in size and have ability to form triple bond but not such ability is in case of phosphorous is shown due to having large size.

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