P-block Elements Questions

Hydrolysis of one mole of peroxodisulphuric acid produces

The correct no. of lone pairs on the central atom of compounds XeF2, XeF4 & XeF6 are respectively

Statement - I : Boron always forms covalent bond. Statement - II : The small size of B3+ favours formation of covalent bond.

Identify the correct sequence of increasing number of π-bonds in the structures of the following molecules : (I) H2S2O6 (II) H2SO3 (III) H2S2O5

the product D is an

Compounds (A) and (B) are -

Pick out incorrect statement

Boron cannot form which one of the following anions ?

Given below are two statements : Statement I: The increasing order of boiling point of hydrogen halides is HCl < HBr < HI < HF. Statement II: The increasing order of melting point of hydrogen halides is HCl < HBr < HF < HI. In the light of the above

Given below are two statements: one is labelled as Assertion (A) and other is labelled as Reason (R) Assertion (A): The boiling point of hydrides of group 17 elements follows the order : HF > HCl > HI > HBr Reason (R): Due to the presence of extensiv

The incorrect match regarding oxoacids of sulphur and their respective bonds is

Metal salt (A) on treatment with dil H2SO4 gives effervescence. The produced gas turns lime water milky. If excess of produced gas is passed in it, a clear solution is obtained. The metal salt is

The most common oxidation state(s) shown by elements of 15th group of periodic table is/are :