1. What is meant by Valency of an element?What is the relation ship between the number of Valence electron and Valency?
2. What is meant by atomic mass number?Explain how the atomic number and mass number of carbon are 6and12 respectively?
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1.Valency means combining capicity of an element . Relationship between the number of valence electrons and valency: Valence electrons are the number of electrons present in the outermost shell of an atom. Valency is the combing capicity of an element to form bonds with the other elements.
Explanation:
2. Atomic number of an element refers to the number of electrons or protons present in that element. ... Carbon has 6 protons, 6 electrons and 6 neutrons. So the atomic number is 6 as the number of protons is 6. The mass number is 12 as the sum of protons and neutrons is 12.
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