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Covalent Character

Though nitrog...

Question

Though nitrogen and phosphorous exhibits +5 oxidation state, nitrogen does not form pentahalide but phosphorous forms. Give reason.

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Solution

Nitrogen does not form penta halides due to the absence of vacant d-orbital while phosphorous has vacant d-orbital and exhibits a valency of 5.

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Q. Give reasons for the following:
(i) Though nitrogen exhibits

+ 5

oxidation state, it does not form pentahalide.
(ii) Electron gain enthalpy with negative sing of flourine is less than that of chlorine.
(iii) The two oxygen-oxygen bond lengths in ozone molecules are identical.

Q. Give reasons for the following :
(i) Though nitrogen exhibits +5 oxidation state, it does not form pentahalide.
(ii) Electron gain enthalpy with negative sign of fluorine is less than that of chlorine.
(iii) The two oxygen-oxygen bond lengths in ozone molecule are identical.

Q. Nitrogen does not form pentahalides. Give reason.

Q. Assertion :Although

P F_{5}, P C l_{5}

P B r_{5}

are known, the pentahalides of nitrogen have not been observed. Reason: Phosphorous has lower electronegativity than nitrogen.

Q. Phosphorous can form two types of halides whereas nitrogen can form only one type of halide. Give reason(s).

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