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प्रश्न
An element has 12 protons. The group and period to which this element belongs is ______
पर्याय
2nd group, 3rd period
2nd group, 2nd period
3rd group, 2nd period
3rd group, 3rd period
MCQ
रिकाम्या जागा भरा
उत्तर
An element has 12 protons. The group and period to which this element belongs is the 2nd group, the 3rd period.
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