Define following terms (a) Chemical formula (b) Valency
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chemical formula:-A chemical formula is a way of presenting information about the chemical proportions of atoms that constitute a particular chemical compound or molecule, using chemical element symbols, numbers, and sometimes also other symbols, such as parentheses, dashes, brackets, commas and plus (+) and minus (−) signs.
valency:-a measurement of the power of an atom to combine with others, by the number of hydrogen atoms it can combine with or take the place of
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the representation of a molecule of a compound using chemical symbols of its constituent element it is called a chemical formula
the combining capacity of the atom of an element it is called valency
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