what is electoral valance
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The electrons that determine valence – how an atom reacts chemically – are those with the highest energy. For a main group element, the valence electrons are defined as those electrons residing in the electronic shell of highest principal quantum number .
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Explanation:A Beam balance is a device to measure weight or mass. These are also known as mass scales, weight scales, mass balances, weight balancesor simply scales, balances, or balance scales. The traditional scale consists of two plates or bowls suspended at equal distances from a fulcrum.
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