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Which of the following substances has covalent bonding:
(1) Germanium
(2) Sodium chloride
(3) Solid neon
(4) Copper
Ans: Germanium
Number of protons, neutrons and electrons in the element 231/89 y is: (1) 89, 231, 89 (2) 89, 89, 242 (3) 89, 142, 89 (4) 89, 71, 89 Ans: 89, 142, 89
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In solid state chemistry the CN 2 2- ion shows constitutional isomerism. The free acids of both anions (at least in the gas phase) are known. Illustrate the structural formul
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Find te emprical formula for the oxide that contains 42.05 g of nitrogen and 95.95 g of oxygen
What do you mean by limiting diffusion current in polarography
Why does p-methoxybenzyl bromide reacts with ethanol faster than p-nitrobenzylbromide Solution) Because o-ch 3 is electron donating group while NO 2 is a electron withdrawing g
a. How can a colloidal solution and true solution of the similar colour be distinguished from each other? b. Give four applications of adsorption
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