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Which type of bonding exists in Li2o and CaF2 respectively :
(1) Ionic, ionic
(2) Ionic, covalent
(3) Covalent, ionic
(4) Coordinate, ionic
Ans: Ionic, ionic
Which of the following set of quantum numbers is correct for the 19th electron of chromium: n l m s (a) 3 0
Physical properties - Alkyl nitrites (1) At ordinary temperature it is a gas that can be liquified on cooling to a colourless liquid, (boiling point 17°C) comprising characteri
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(a) Explain in terms of ionic equilibria why the aqueous solution of a salt derived from a weak acid and a strong base (e.g. sodium phenolate) has a pH greater than 7. (b) B
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In an element going away from nucleus, the energy of particle : (1) Decreases (2) Not changing (3) Increases (4) None of these Ans: Increases
The fresh feed to an ammonia production process contains nitrogen (N 2 ) and hydrogen (H 2 ) in stoichiometric proportion, along with an inert gas (I). The feed is combined with
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