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[" 3.The number of electrons in an eleme...

[" 3.The number of electrons in an element "X" is "15" and the number of neutrons "],[" is "16" .Which of the following is the correct representation of the element? "],[" (a) "(31)/(15)X],[" (b) "(31)/(16)X],[" (c) "15X],[" (d) "15X]

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