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Why a covalent bond is directional?
The covalent bond is formed as a result of pairing of two electrons in the atomic orbitals of two atoms. The bond then should lie along the direction of the overlapping of atomic orbital i.e. the bond only happens in the direction of the shared pairs of electrons. As the covalent bonds will have strong directional preferences unlike ionic and metallic bonds.
Semi-synthetic polymers Rayon and other cellulose derivatives such as cellulose nitrate, cellulose acetate so on, are semi-synthetic polymers. These illustrated as thermoplasti
Uses of Benzaldehyde - Aldehydes and Ketones Benzaldehyde is used, (a) In perfumery (d) In manufacture of dyes (c) In preparation of benzoic acid, cinnamic acid, cinna
What was the calculated ?H value obtained for the reaction NH3 + HCl –› NH4Cl using the thermodynamic data in your lab procedure? The thermodynamic data is: •?H°f for NH3 (aq) = -
determination of glucose,fructose and maltose.
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The number of 2p electrons having spin quantum numbers= -1/2 are: (1) 6 (2) 0 (3) 2 (4) 3 Ans: 3
Calculate the molar concentration of the solution essential to obtain the value of 10 molecules per µm2. (For this calculation we suppose that the transfer of the dye molecules fro
The determination of k is not a strait forward exercise. Model it from first principles using Bernoulli's equation would produce a square root relationship and would probably have
what is sp- sp bonding
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