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Rajshekhar
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Asked: 2023-12-18T05:38:25+00:00 In:

An element “X” has mass number 35 and the number of neutrons, is 18. Identify the group number and period of “X”.

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    1 Answer

    1. Atomic number of X = Mass number of (X – No. of neutrons) = (35-18) =17
      Electronic configuration = 2, 8, 7
      Group number = 17, Period No. = 3

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