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 have similar reactivity.
They have similar reactivity.
They are both colorless.
They are both colorless.
They are both hard and brittle.
They have similar atomic weights.
The correct answer is: They have similar reactivity.
Explanation:
Sodium (Na) and potassium (K) are both located in the same group on the periodic table because they have similar reactivity. The periodic table is organized based on the chemical properties of the elements, and elements in the same group have similar characteristics and tend to react in similar ways.
To determine this, you can look at the periodic table and observe that sodium and potassium are in the same column or group, specifically group 1. Elements in group 1 are known as alkali metals and they share similar properties, including their reactivity.
So, the reason sodium (Na) and potassium (K) are in the same group on the periodic table is because they have similar reactivity.