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Explain the following observations:
(i) Generally there is an increase in density of elements from titanium (Z = 22) to copper (z =29) in the first series of transition elements.
(ii) Transition elements and their compounds are generally found to be good catalysts in chemical reactions.
Polysaccharide or Starch and cellulose They are polymer of monosaccharide. The most significant polysaccharides are starch and cellulose. They have a general formula that is (C
how is back titration graphs drawn
why exception is seen in lanthanoids
The principal quantum number represents : (1) Shape of an orbital (2) Distance of electron from nucleus (3) Number of electrons in an orbit (4) Number of orbitals in an
The correct sequence of increasing covalent character is represented by: (1) LiCl 2 (2) BaCl 2 (3) NaCl 2
Q. Show the rate of decrease in atomic radius? The rate of decrease in atomic radius along the lanthanide series and also along the actinide series is even less than that in th
dissolving
Properties of Picric Acid Picric Acid is a yellow crystalline solid, melting point 122°C. Picric Acid is insoluble in cold water but soluble in hot water and in ether. It is ac
Will benzylic halide undergo SN1 or SN2 mechanism ?Why? Ans) Benzyl chloride is a primary alkyl halide and undergo SN2 rapidly.
Which of the following compounds is ionic: (1) Kl (2) CH 4 (3) Diamond (4) H 2 Ans: Kl
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