InterviewSolution
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InterviewSolution
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To which period A and B belongs to? in periodic table lesson |
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Answer» Calcium (Ca) is in group 2, for it contains two valence ELECTRONS. In the old IUPAC system the letters A and B were DESIGNATED to the left (A) and right (B) PART of the table, while in the CAS system the letters A and B are designated to main group ELEMENTS (A) and transition elements (B). |
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