P Block Elements

Liquor ammonia is concentrated solution of in water while liquid ammonia is liquefied ammonia gas

Ammonium dichromate on heating gives nitrogen, chromic oxide and water.

When is added to acidified solution of sodium nitrite NO gas is liberated and is set free.

White phosphorus has the following structure

The structure shows that the four atoms in white phosphorus lie at the comers of a regular tetrahedron.

Aluminium is the most abundant metal and third most abundant element in earth's crust.

n diborone, odd-electron bonds are found in the oridges. From figure, it is clear that 4 electrons are present for bonding in the bridges.

bonds
bonds

saturated with is called oleum or sulphan.

Silicone oils are formed on low degree of polymerisationSilicon oil in a polymer of trimethylchloro silane and dimethyldichloro silane. These
are useful as broad spectrum antifoaming agents.

The correct answer is A:
When sulphuryl chloride reacts with white phosphorus , it give phosphorus pentachloride and' sulphur dioxide . The reaction is as follows:

Flame colours are produced from the movement of the electrons in the metal ions present in the compounds. Calcium gives brick red colour. Strontium gives crimson colour. Barium gives apple green colour.

Highest n/p ratio

react with as follows


Thus, addition of excess of ions change the as soluble complex of .
Hence, becomes soluble.

Higher be the oxidation number of central atom in oxo-acids, more strongly it behave as Bronsted-acid.
Oxidation number for in
Oxidation number for in
Oxidation number for in
Oxidation number for in
Hence, is the strongest Bronsted acid in aqueous solution.

Shape of

The Xe show -hybridisation in ,
Thus, its geometry is Pentagonal-bipyramidal.
But, number of electron pair
Number of bond pair , number of lone pair .
A lot of electrons are present at axil position and all bonds are in same plane.
Hence, the shape is planar.

White phosphorus has single
bonds, 4 lone pairs of electrons and angle of . It is a translucent white waxy solid. It has large atomic size and less electronegativity. So, it forms single bond instead of multiple bond. It consists of discrete tetrahedral molecule as shown in the figure.

is the anhydride of . It reacts with water slowly to give perchloric acid

Its structure is as follows

It is less reactive than other oxides of chlorine and does not react with , coal or paper at room temperature.