Sodium (Na) and potassium (K) are in the same group on the periodic table because they have similar reactivity. Elements in the same group typically have similar chemical properties due to their having the same number of valence electrons. In the case of sodium and potassium, both have one valence electron, which leads to similar reactions with other elements.
Why are sodium (Na) and potassium (K) in the same group on the periodic table?
(1 point)
• They have similar reactivity.
• They are both colorless.
• They have similar atomic weights.
• They are both hard and brittle.
1 answer