Physics, 23.06.2019 20:10, KhaRNate

Each period of the periodic table ends with: 1. alkali metals such as na, k, li, and cs 2. period 7 elements 3. group viiia elements 4. the oxygen family 5. seven orbital shells

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Each period of the periodic table ends with: 1. alkali metals such as na, k, li, and cs 2. period 7...