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03/11/2020 12:18 pm
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The electronic configurations of three elements X, Y and Z are X - 2, 8; Y - 2, 8, 7 and Z - 2, 8, 2. Which of the following is correct?
(a) X is a metal
(b) Y is a metal
(c) Z is a non-metal
(d) Y is a non-metal and Z is a metal
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03/11/2020 12:19 pm
(d) Y is a non-metal and Z is a metal