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प्रश्न
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?
विकल्प
X is a metal
Y is a metal
Z is a non-metal
Y is a non-metal and Z is a metal
MCQ
उत्तर
Z is a non-metal
Explanation:
According to the electronic configuration, Y is Chlorine and Z is Magnesium.
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