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molecular covalent compounds that do not conduct electricity in water.
Système International dâUnités. Internationally agreed coherent system of units: distance in...
materials put into the soil to provide the required nutrients essential to plant life and growth...
(also called dative covalent bond) one atom contributes both electrons (or a lone pair of...
a halogen atom (F, Cl, Br or I) reacts by addition reaction with alkenes