p-Block Element...

Inert pair effect of p-block elements is due to the

The elements of group 14 are slightly more electronegative than group 13 elements because of

In which of the following compounds, nitrogen exhibits highest oxidation state?

The function of Fe (OH)₃ in the contact process is

In general, nonmetals as compared to metals have

Among the following which is the strongest oxidizing agent?

The compounds formed by highly reactive non-metals with highly reactive metals are generally

A compound X, of boron reacts with NH₃ on heating to give another compound. Y which is called inorganic benzene. The compound X can be prepared by treating BF₃ with Lithium aluminium hydride. The compounds X and Y are represented by the formulas.

Three reactions involving  are given below  

B.

C.   

In which of the above does  act as an acid?

When Cl₂ gas reacts with hot and concentrated sodium hydroxide solution, the oxidation number of chlorine changes from

As we move from B to Al in the p-block elements the sum of the first three ionisation enthalpies

The non-metal oxides are:

Dry ice is

The tendency of BF₃, BCl₃ and BBr₃ to behave as Lewis acid decreases in the sequence:

Of the following compounds the most acidic is

Boron forms only covalent compounds and not +3 ions because

The element having the noble gas plus 14 f- electrons plus 10 d-electron cores

In trivalent state, for example, the trichlorides, being covalent are hydrolysed in water form

Which of the following statements regarding ozone is not correct?

XeF₂ is isostructural with

Aqueous solution of Na₂S₂O₃ on reaction with Cl₂ gives

Which noble gas is most abundant in atmosphere? 

Aqueous solution of Na₂S₂O₃ on reaction with Cl₂Cl₂ gives

One of the following p-block elements has unusually low melting point

In the manufacture of sulphuric acid by contact process Tyndall box is used to