Question

1pt the reactivity of metals tends to increase as you move

a. up a column on the periodic table.
b. down a column on the periodic table.
c. from left to right across the periodic table.
d. from the bottom - left to the top - right of the periodic table.

Explanation:

• For metals, as we move down a group (column) in the periodic table, the atomic size increases.
• The outermost electrons are farther from the nucleus and are more easily lost, which increases the reactivity.
• Moving up a column (A) would decrease reactivity as atomic size decreases.
• Moving from left to right across a period (C) generally decreases metal reactivity as the tendency to lose electrons (metallic character) decreases.
• Option D is incorrect as the trend from bottom - left to top - right is not the correct description for increasing metal reactivity.

Answer:

B. down a column on the periodic table.