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Period 4 elements

Period 4 is the first row where transition metals appear. It runs from potassium to krypton and includes iron, copper, zinc and nickel - the metals that power everything from kitchen knives to electric grids.

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Period: 1 2 3 4 5 6 7
Group: 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18
Block: S P D F
Phase: Solid Liquid Gas