5. Why are sodium (Na) and potassium (K) in the same group on the periodic table?(1 point)

Responses

They have similar atomic weights.
They have similar atomic weights.

They are both hard and brittle.
They are both hard and brittle.

They have similar reactivity.
They have similar reactivity.

They are both colorless...

1 answer

Sodium (Na) and potassium (K) are in the same group on the periodic table because they have similar reactivity. Both elements are alkali metals and share similar chemical properties, including the tendency to lose one electron and react with water and halogens.