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InterviewSolution
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Uwrite the Valence shellelectronic configuration of theatom of the following elements. (a) An element present in periods 3 of group VA(b) An element present in period 2of group VIA. |
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Answer» Explanation: a)the third period contains eight elements : sodium, magenisum , aluminium, silicon, phosphorus, sulfur, chlorine, and argon.b) the second period contains the element lithium, beryllium, boron, carbon, nitrogen, oxygen, fluorine, and neon. In a quantum mechanical descripition of atomic structure , this period corresponds to the filling of the seonds ( n=2) shell, more specially its 2s and 2p subshells. |
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