Explain the terms with respect to each other using relevant examples a]Valency and valence electrons
b]Atomic number and atomic mass (also specify how are they written)
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Explanation:
no.of electrons in last shell are called valence electrons.
no. of electrons required to complete the octet of an element is called as valency of an element.
no. of protons in the nucleus of an element is considered its atomic no.
The sum of no. of protons +no.of neutrons is called the atomic mass.
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