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Till 20elememts write the no of electrons in outermost shell.if less than 4 then this is the valency otherwise subtract from 8
why element belonging to group 3 to 12 are trnsicition element
how to calculate the equivalent weight of an ion
State about the Point imperfection They are imperfect point-like regions in the crystal. One or two atomic diameters is the typical size of a point imperfection. A substitu
Q. What do you mean by Permissible level ? To regulate and enforce safety about the use of these synthetic colours and dyes PFA, 1954 has covered their use in part IV comprisin
Metals: Iron : 1. Most automobiles, machine tools, building parts, the hulls of large ships, and machine parts are made out of iron. (Iron metal is strong but is quite
Hydrazine, N2H4, reacts exothermically with hydrogen peroxide, H2O2, to produce gaseous nitric acid and water vapour. What would a balanced equation for this reaction be?
can you give examples of semi-synthetic polymer
Chemical characterstics of carbonyl compounds Carbonyl compounds provide chemical reactions due to carbonyl group and α-hydrogens. Carbonyl compounds' Chemical reactions can
Why transition elements form interstitial compound
calculate the molarity of sodiun in 0.66ml water
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