Question

Atoms of elements at the top of a group on the periodic table are smaller than the atoms of elements at the bottom of the group. How does this help explain the difference in the reactivity of metals within a group? The valence electrons of the larger atoms are farther from the nucleus and are easier to remove, so the metals near the top are more reactive than those at the bottom. The valence electrons of the larger atoms are farther from the nucleus and are harder to remove, so the metals near the bottom are more reactive than those at the top. The valence electrons of the larger atoms are farther from the nucleus and are harder to remove, so the metals near the top are more reactive than those at the bottom. The valence electrons of the larger atoms are farther from the nucleus and are easier to remove, so the metals near the bottom are more reactive than those at the top.

Answer 1

Answer:

the answer is D.The valence electrons of the larger atoms are farther from the nucleus and are easier to remove, so the metals near the bottom are more reactive than those at the top.

Explanation:

Answer 2

The valence electrons of the larger atoms are farther from the nucleus and are easier to remove, so the metals near the bottom are more reactive than those at the top. Hence, option D is correct.

What is valence elctron?

Valency is the number of bonds an element or an atom can form. Whereas valence electrons are the electrons that take part in chemical bond formation.

Atoms get bigger as you go down a column on the periodic table.

This is because in going down a column you are jumping up to the next

higher main energy level (n) and each energy level is further out from the

nucleus - that is, a bigger atomic radius.

Atoms get smaller as you go across a row from left to right.

Hence, option D is correct.

Learn more about the valence electron here:

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