what is periods and periodicity
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Choose the correct alternative. the ___ determines the object will flow or sink. a) gravitational force b) contact force c) non contact force d) buyont force
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A period in the periodic table is a row of chemical elements. ... Each next element in a period has one more proton and is less metallic than its predecessor. Arranged this way, groups of elements in the same column have similar chemical and physical properties, reflecting the periodic law.
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