Question

three metals from group 1 on the periodic table were tested for reactivity in water. a 1g sample of each metal was added to 100 ml of water, and observations were recorded in a table. which statement best describes a conclusion that can be drawn from the investigation about the reactivity of metals in group 1? a. it is independent of the elements positions on the periodic table. b. it is constant within the group on the periodic table. c. it decreases down a group on the periodic table. d. it increases down a group on the periodic table.

Explanation:

As we move down Group 1 of the Periodic Table (lithium - sodium - potassium), the reactivity with water increases. Lithium has slight fizzing, sodium has moderate fizzing, and potassium has vigorous fizzing and flames. This shows that reactivity increases down the group.

Answer:

D. It increases down a group on the Periodic Table.