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Question
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?
Options
X is a metal
Y is a metal
Z is a non-metal
Y is a non-metal and Z is a metal
Solution
Y is a non-metal and Z is a metal
Explanation -
Out of X, Y and Z, X and Y are non-metal and Z is a metal.
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