CCL4 cannot be hydrolysed where as SiCL4 undergoes hydrolysis why?????

what is inert pair effect????

What happens when

(a) Borax is heated strongly,

(b) Boric acid is added to water,

(c) Aluminium is treated with dilute NaOH,

(d) BF₃ is reacted with ammonia?

What happens when :

(i)Quick lime is heated with silica

(ii)Chlorine reacts with slaked lime

Write the reactions involved

why is boric acid consisdred weak acid

What is the chemical formula of the borax bead??

what happen when boric acid is heated?

Write balanced equations for:

(i) BF₃ + LiH →

(ii) B₂H₆ + H₂O →

(iii) NaH + B₂H₆ →

(iv) H₃BO₃

(v) Al + NaOH →

(vi) B₂H₆ + NH₃ →

Give reasons

Concentrated HNO3 can be transported in alluminium container.

Graphite is used as lubricant.

Al wire is used to make transmision cables.

 Why does AlCl₃ exist as a dimer?

what happens when BF₃ is treated with NH₃

answer soon

why gallium has less atomic radii than aluminium ????and p block atomic radii increases as we go down the group

why ccl₄ is resistant to hydrolysis but sicl_{4 is readily hydrolysed ?}

 PF5 exist but NF5 does not exist .why?

pls. explain structure of diamond and graphite showing their orbital overlaps and explain as to why graphite conducts electricity.

Explain structures of diborane and boric acid.

why are p-block elements known as representative elements???

Why does the solubility of alkaline earth metal hydroxides on water increase down the group.

why the size of gallium is less than aluminium?

why is Pb (4) less stable than Pb (2) ?

Q. The Maximum Covalency Of Boron Is 4. Why?

My Main Doubt IS That the Ground State Electronic Configuration Of Boron is 1s²2s² 2p¹

So When It Exhibits Covalency of 4, what is its electronic configuration? Please include this electronic

configuration in your answer.

what are pyrosilicates and cyclicsilicates?

Why BF₃ acts as Lewis acid ???

pls explain the structure of diborane(b2h6).does hydrogen bonding work here?? but hydrogen bonding is only possible for highly electronegative elements(O,N,F).

diamond is used as an abrasive .give reason?

How will you explain higher stability of BCl3 as compared to TlCl3?

The +1 oxidation state is more stable than the +3 oxidation state for thallium.why? 

Which is more ionic SnCl₂ or SnCl4?

Why is anhydrous AlCl₃ used as catalyst in several organic reactions?

Explain the following reactions

(a) Silicon is heated with methyl chloride at high temperature in the presence of copper;

(b) Silicon dioxide is treated with hydrogen fluoride;

(c) CO is heated with ZnO;

(d) Hydrated alumina is treated with aqueous NaOH solution.

GeX₄ is more stable than GeX₂ ehereas PbX₂ is more stable than PbX₄ . why?

barium chloride exist as a monomer even though electron deficient, where as aluminium chloride as dimer.give reason.

give reason:

SiF6^2- exists while CF6^2- does not.

BCl₃ exist but BH₃ does not. Give reason

What are silicones? How are they prepared? What are their uses?
Explain a) silicates b) zeolites.

 please explain the structure of diborane.

why is aqueous solution of borax is basic in nature?explain.

why in group 13 the electronegativity first decreases and then increases?

it is said that electronegativity is greater when the atomic radius is small then why it is so?

PbCl2 is stable but PbCl4 is unstable. Why?

what is diagonal relationship?& give examples.

 what is group oxidation state?

 Compound pbO is more stable than pbo2  why?

What are silicates and Silicones? 

 what r electron precise compounds

what is the resonance strusture for HCO3- ion??

Why boric acid is a monobasic acid?

1. carbon shows catenation property and silicon do not althoughit belong to carbon family . justify