Indirapuram, Ghaziabad, India - 201014
22
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Online (video chat via skype, google hangout etc)
At the Institute
Board
CBSE
CBSE Subjects taught
Mathematics, Science
4.9 out of 5 18 reviews
Babita Misra
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Shivam Chandra
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Sachin Gupta
"Extremely nice, knowledgeable and understanding. Strong subject matter expert on maths and science with good past experience in teaching children of various age groups "
Answered on 24/07/2020 Learn CBSE/Class 10/Science/Unit I: Chemical Substances - Nature and Behaviour/Chemical Reactions and Equations
Answered on 03/07/2020 Learn CBSE/Class 10/Science/Unit I: Chemical Substances - Nature and Behaviour/Chemical Reactions and Equations
The Combining capacity of an atom is called valency. Thus, it is the number of valence electron an atom has to gain or lose from its outermost orbit. The oxidation number is the charge an atom can carry. For instance, nitrogen has valency three, but its oxidation number can range from -3 to +5.
Valency of Mg is +2.
Cu has two valencies. +1 and +2
Cuprous +1
Cupric +2
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Indirapuram, Ghaziabad 
