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Symmetry is a property of molecules having more than one atom of the same kind, with equal bond lengths and/or bond angles. As like the high symmetry of the SF6 molecule (Fig. 1. arises from the six equal S-F bonds disposed at angles of 90° to each other. In order to build the notion more precise we use the idea of a symmetry operation. For example rotating SF6 by 90° about an appropriate axis, it appears indistinguishable after the rotation. The axis concerned is known as the symmetry element. Rotations which do not leave the molecule looking the similar are not symmetry operations.
why firstly test for ammonium radicals before analysis of cation radicals
What is heat atomisatin? Solution : Heat of atomisation or enthalpy of atomisation is the energy required to dissociate one mole of a given substance into atoms.
Q. Early Theories of Matter? In ancient Greece philosophers discussed the nature of matter. The philosopher Democritus held that matter was composed of elementary particles cal
what are the various steps involved in metal extraction?
What is chemical and physical properties and uses of acid halides and acid anhydrides
why do transition metals form complex salts
The standard free energy change for a reaction is -212.3 kJ mol -1 . If the enthalpy of the reaction is - 216.7 kJ mol -1 , calculate the entropy change for the reaction.
explain the synthesis of freon and westron i need only the synthesis of those coompound
Distillation under reduced pressure: Distillation under reduced pressure is widely used for the purification of liquids which have very high boiling points at atmospheric pres
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