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The atomic number of an element having the valency shell electronic configuration 4s 2 4p 6 is: (1) 35 (2) 36 (3) 37 (4) 38 Ans: 35
A solution contains an unknown amount of osmium at the µg/g level, or below. Chemically pure osmium (Os) may be separated from the solution, but the chemical yields are variable an
how can the melting point be used to determine the purity of organic compounds
why it is called microcosmic salt???
When a molecule is shown by two or more nearly equal structures, which vary in the arrangement of electrons, then the molecule is said to exhibit resonance.
What are the s block elements on the Periodic Table
Calculate how the internal energy stored in one O-H bond of H20 Consider the following chemical reaction H20(g)-->2H(g) + O(g) at 298.15 K and 1.00 Bar fH* [H(g)]=218.0 kJ/mole fH*
Uses of oils and fats (a) Several oils and fats are used as food material. (b) Oils and fats are employed for the manufacture of glycerol, fatty acids, soaps, candles, veget
explanation for quinonoid theory
Properties of Nitrophenols: O-Nitrophenol is a yellow in colour crystalline compound, whereas m- and p-isomers are colourless crystalline compounds. Isomer orth
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