p block
why BiF3 is ionic whereas other trihalides are covalent in nature?
how 0.5N HCL is prepared for 10 littre solution
Why oxidising character of oxoacids of halogens decreases as oxidation number increases?
It may be prepared by the action of phosphorus on thionyl chloride.P4 + 8SOCl2 4
An extension of the kinetic molecular theory of gases recognizes that molecules have an appreciable size and deals with molecule-molecule collisions. We begin studies of elementary reactions by investigating the collisions b
Give me answer of this question. The volume of water to be added to 100cm3 of 0.5 N N H2SO4 to get decinormal concentration is : (a) 400 cm3 (b) 500cm3 (c) 450cm3 (d)100cm3
Silicon has three naturally occurring isotopes. 28Si, mass = 27.976927; 29Si, mass = 28.976495; 30Si, mass = 29.973770 and 3.10% abundance. What is the abundance of 28Si?
Choose the right answer from following. The magnitude of colligative properties in all colloidal dispersions is : (a) Lowerthan solution (b)Higher than solution(c) Both (d) None
the death cap mushroom based on your knowledge of the biochemistry of dna and rna
Sulfur trioxide (SO3) is manufactured by the gas-phase oxidation of SO2 over a platinum catalyst: SO2 + ½ O2 à SO3 The catalyst is a non-porous ext
Which is more reactive towards nucleophilic substitution aryl halide or vinyl halides
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