Teaching UP PGT Mock Test Series 2024 Chemistry Classification of Elements and Periodicity in Properties Periodic Table

નીચેના તત્વોની કઈ જોડી વચ્ચે વિકર્ણ સંબંધ જોવા મળે છે?

1
Li and Mg
2
Be and B
3
Be and Mg
4
Na અને Mg
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