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What is the valency of oxygen and why ?

Answer» VALENCY of OXYGEN is 2 .. Oxygen is 8.so,electronic configuration of oxygen is 2,6.there is need to be atmost 2electrons are PRESENT in first shell of an atom .and in second shell there are 8 electrons are needed to FORM stable octate.but oxygen only have 6 electrons in 2ND shell.so,oxygen needs 2electrons to complete its octate


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