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 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 reactivity.
The correct answer is: They have similar reactivity.
To determine why sodium (Na) and potassium (K) are in the same group on the periodic table, we need to look at their electronic configurations. Both sodium and potassium belong to Group 1, also known as the alkali metals.
Alkali metals have similar electronic configurations in their outermost shell, specifically one valence electron. This electron configuration gives them similar chemistry and reactivity.
To find this information, you can refer to the periodic table and observe the group numbers. Sodium and potassium are both found in Group 1, which indicates that they have similar properties due to their electronic configurations.
The correct response is: They have similar reactivity.
Sodium (Na) and potassium (K) are in the same group because they have similar reactivity. Elements in the same group of the periodic table have similar electron configurations, which determines their chemical properties. Sodium and potassium both belong to Group 1 or the alkali metals. They both have one valence electron, which makes them highly reactive and prone to forming compounds with other elements. Therefore, they exhibit similar chemical behaviors and reactions.