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Chemistry, 04.09.2020 22:01 sairaanwar67

Determine the number of valence electrons the following atoms have and how many electron shells:
1. Lead (Pb)
2. Iodine (1)
3. Gallium (Ga)
4. Barium (Ba)
5. Rubidum (RD)
6. Antimony (Sb)
7. Krypton (Kn)
8. Selinium (Se)

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Determine the number of valence electrons the following atoms have and how many electron shells:
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