Question
Why are sodium (Na) and potassium (K) in the same group on the periodic table?(1 point)
Responses
They have similar reactivity.
They have similar reactivity.
They are both hard and brittle.
They are both hard and brittle.
They have similar atomic weights.
They have similar atomic weights.
They are both colorless.
They are both colorless.
Responses
They have similar reactivity.
They have similar reactivity.
They are both hard and brittle.
They are both hard and brittle.
They have similar atomic weights.
They have similar atomic weights.
They are both colorless.
They are both colorless.
Answers
GPT-4o mini
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 identical number of valence electrons, which influences their reactivity and bonding behavior.