P block, diamond is covalent.yet it has high melting point.why?

diamond is covalent.yet it has high melting point.why?

Optical glass, Optical glass: They contain phosphorous as replacement for ...

Optical glass: They contain phosphorous as replacement for most of all the silica and lead silicate, containing a little CaO 2 , the latter is capable of absorbing ultraviolet lig

Structure of metal carbonyls, explain the bonding and structure in transiti...

explain the bonding and structure in transition metal carbonyls

Test for the presence of linseed oil, Q. Test for the presence of linseed o...

Q. Test for the presence of linseed oil? Hexabromide test is done to know the extent of presence of linolenic acid. In presence of fish oils, which are rich in linolenic acid,

Degree of hardness, DEGREE OF HARDNESS:   The degree of hardness o...

DEGREE OF HARDNESS:   The degree of hardness of water is conveniently expressed in terms of equivalent amount of CaCO 3 . Although hardness of water is never present in th

The equation, The equation Δ x Δp ≥ h/ 4Π   shows: (1) de-Broglie relat...

The equation Δ x Δp ≥ h/ 4Π   shows: (1) de-Broglie relation         (2) Heisenberg's uncertainty principle   (3) Aufbau principle (4) Hund's rule ans:  Heisenberg'

Mixtures, classification of mixture according to particle size, uniform mix...

classification of mixture according to particle size, uniform mixture, composed of solute and solvent

Ionic bond,

Rubber - polymer, Rubber - polymer It is a polymer that is able of retu...

Rubber - polymer It is a polymer that is able of returning to its original size, shape or length later than being deformed or stretched. It a kind of elastomer. Rubber is of tw

Total number of valence electron, The total number of valence electrons in ...

The total number of valence electrons in 4.2 gm N - 3   of ion is ( N A is the Avogadro's number): (1) 1.6N A                               (2) 3.2N A