An element X has mass number 35 and number of neutrons = 18. Write ato – InterviewSolution

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1.	An element X has mass number 35 and number of neutrons = 18. Write atomic number and electronic configuration of X. Also write group number, period number and valency of X.
Answer» Solution :Atomic number = mass number - number of neutrons `= 35 - 18 = 17. ` Electronic configuration of `X: 2, 8, 7` GROUP number = 17, period number = 3, valency = 8 - 7 = 1

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