Why does `R_(3)P=O` exist but `R_(3)B=O` does not (R = alkyl group) ?

Why does O_(3) act as a powerful oxidising agent ?

(A) IUPAC name of the compound CH_3 - undersetoverset(|)(CH_3)(C)H - O - CH_2 - CH_3 is (R) In IUPAC nomenclature, ether is regarded as hydrocarbon derivative in which a hydrogen atom is replaced by -OR or-OAr group [where R = alkyl group and Ar = aryl group]

OF^(-) does not exist , though HOF is known (R ) HOF molecule does not ionise easily

BCl_3 does not exist as dimer but BH_3 exist as dimer because

[Al(NH_(3))_(6)]^(3+) does not exist in aqueous solution. Why?

(A) 1-propanol & 2-propanol can be distinguished by haloform test (R) The trihalomethyl group (-CX_3) of CH_3 - oversetunderset(||)(O)(C) - CX_3 is a good leaving group for nucleophilic substitution reaction

Identify the major products P, Q and R in the following sequence of reactions +CH_(3)CH_(2)CH_(2)Cl overset("Anhydrous "AlCl_(3))rarr P underset((ii)H_(3)O //Delta)overset((i) O_(2))rarr Q+R

(A) : Aniline does not undergo Friedal-Crafts reaction (R): -NH_(2) group of aniline reacts with AICI_(3) ,