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  • Give reasons: (i) Red phosphorus is less reactive than white phosphours. (ii) Sulphur shows greater tendency for catenation than oxygen. (iii) CIF3 is known but FCI3 is not known.   <div

Give reasons:
(i) Red phosphorus is less reactive than white phosphours.
(ii) Sulphur shows greater tendency for catenation than oxygen.
(iii) CIF3 is known but FCI3 is not known.

 

 

 

 
 
 
 
 

Answers (1)

(i) Red phosphorous is less reactive than white phosphours because in red phosporous, py
are joined through covalent bonds to give ploymeric structure whereas in white phosphorous, individual py molecules are held by weak vander waal forces which on easier to break.
(ii) Sulphur has more tendency for catenation than oxygen due to big size of sulphur lone pair -lone pair replsions are less and s-s bond is sronger than o-o bond.
(iii) CIF3 is known but FCI3 is not known beacause u has vacant d-orbitals of +3 but F due to its high electronegativity and absence of vacant d-orbitals can not show oxidation state other than +1.
u is bigger in size and can accomodate 3-F atoms while F bring smaller atom cannot accomodate large sized u atoms.

Posted by

Sumit Saini

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