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How do you account for the following:
(a) All scandium salts are white. (At. No. of Sc = 21)
(b) The first ionization energies of the 5d transition elements are higher than those of the 3d and 4d transition elements in own groups.
calculate the concentration of the Naoh solution you have prepared on the basis of the measured mass of the pellets used in the solution volume
properties of halogens
BRIEF DESCRIPTION ON METALS AND METALLURGY
Principal functional group-Polyfunctional Organic Compounds If the organic compound includes two or more functional groups, one of the functional sets is chosen as the princ
Bohr's radius can have: (1) Discrete values (2) +ve values (3) - ve values (4) Fractional values Ans: +ve values
which of the following is not a characteristic of plunck''s quantum theory of radiation? A) Radiation are associated with energy B) A body can emit less or more than a quantum of e
Addition reactions - Organic Chemistry Addition reactions are given by those compounds that have at least one p bond, i.e.,
Antioxidants: Antioxidants are the significant and essential food additives. These substances hold back the action of oxygen on the food and hence help in its preservation. Th
Modern Meaning of Organic Chemistry Organic chemistry is a chemistry of hydrocarbons and their derivatives where covalently bonded carbon is a necessary constituent. Berzelius
The covalent compound HCl has the ionic character as: (1) The electronegativity of hydrogen is greater than that of chlorine (2) The electronegativity of hydrogen is equal
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