NEET Foundation 2022.
Biology Foundation for Class 10.
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Personalized AI Tutor and Adaptive Time Table, Self Study Material, Weekend Live Classes, Mentorship from our Experts, Unlimited Mock Tests and Personalized Analysis Reports, 24x7 Doubt Chat Support,.
Personalized AI Tutor and Adaptive Time Table, Self Study Material, Weekend Live Classes, Mentorship from our Experts, Unlimited Mock Tests and Personalized Analysis Reports, 24x7 Doubt Chat Support,.
Valency is the number of electrons that can be donated or gaining or shared between different atoms or same type atoms. For Na can donate 1 electron, thus its valency is +1. Oxygen can gain 2 two electrons, thus its valency is -2. Carbon can share 4 electrons, thus its valency is 4.