what is octet rule used in valency finding
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The Octet Rule. When determining the valency of an atom or molecule (one for which you can't use the periodic table to determine valency), chemists use the octet rule. According to this rule, atoms and chemicals combine in such a way as to produce eight electrons in the outer shell of whatever compound it is they form.
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5Q)Ans)The molar mass is the mass of all the atoms in a molecule in grams per mole. To calculate the molar mass of a molecule, we first obtain the atomic weights from the individual elements in a periodic table. We then count the number of atoms and multiply it by the individual atomic masses.
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The octet rule refers to the tendency of atoms to prefer to have eight electrons in the valence shell. When atoms have fewer than eight electrons, they tend to react and form more stable compounds.
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