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Aromaticity or aromatic character
The characteristic behaviour of aromatic compounds is termed as aromaticity. Aromaticity is due to the extensive delocalisation of p-electrons in planar ring system. Huckel (year1931) described aromaticity on the basis of following rule.
What are the objectives of heat treatment of metals? Objectives of heat treatment- Cause relief of internal stresses developed during cold working, welding, forging, cas
Physical properties of Succinic Acid (a) Succinic Acid is a white crystalline solid. It melts at 188° C (b) Succinic Acid is less soluble in water. It is comparatively more
Q. Application of electrometallurgy? In theory, aluminium metal would be made the same way. But, aluminium trichloride is covalent and it does not conductor of electricity. As
Highest melting point would be of: (1) He (2) CsCl (3) NH 3 (4) CHCl 3 Ans: CsCl
how to find the structure of Mn2(CO)10
Explain trend in variation of the atomic size properties from Boron and Thallium
Entropy (S) is a molecular 'disorder', or more precisely 'the number of microscopic arrangements of energy possible in a macroscopic sample'. Entropy depends strongly on the state
According to Collision theory a chemical reaction takes place due to collision between the particles of these reactants. The number of reacting species (atoms, ions or molecules) w
Nitrogen atom has an atomic number of 7 and oxygen has an atomic number 8. The total number of electrons in a nitrate ion will be: (1) 8 (2) 16 (3) 32
The interionic attraction depends on interaction of: (1) Solute-Solute (2) Solvent-Solvent (3) The charges (4) Molecular proper
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