P Block Elements

O₂F₂ oxidises plutonium to PuF₆ and the reaction is used in removing plutonium as PuF₆ from spent nuclear fuel.

When red phosphorus is heated in a sealed tube at 803 K, a - black phosphorus is formed.

(1) $N{a}^2{O}_2+2H_{2}O\to 2NaOH+H_2{O}_2$  

(2)  $Ba{O}_2.8H_{2}Ogives{H}_2{O}_2$ after evaporation

(3) PbO₂ + 2H₂O ->Pb (OH)₄

(4) SnO₂ + 2H₂O ->Sn (OH)₄

Type of back bonding:-

Therefore order of back bonding strength =>

BF₃ > BCl₃ > BBr₃ > Bl₃

the lowest spin only magnetic moment for Ni⁺² because of minimum unpaired electron.

For AB₃ interhalogen compound, which is T-shaped, only two lone pair electrons are available on central atom.

Reactivity order of halogens and inter halogens are F₂ > ClF > Cl₂ and ClF forms HOCl and HF after the reaction with water.

All hydrogens are attached to oxygen are ionisable.

Cobalt (II) meta borate is a blue colour of Bead.

Here 'X' is the Gypsum (CaSO₄.2H₂O) which is used to enhance the setting of time.