Sodium (Na) and potassium (K) are in the same group on the periodic table because they have similar reactivity. Both elements belong to Group 1, known as the alkali metals, and they share similar properties such as their tendency to lose one electron to form positive ions and their vigorous reactions with water and halogens.
Why are sodium (Na) and potassium (K) in the same group on the periodic table? (1 point) Responses They are both colorless. They are both colorless. They are both hard and brittle. They are both hard and brittle. They have similar atomic weights. They have similar atomic weights. They have similar reactivity.
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