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?
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?