Question

why does the reactivity of metals increase from right to left on the periodic table? (1 point)
item 1
metals on the right have more valence energy levels, so the ability of the
nucleus to attract electrons is reduced.
item 2
metals on the right have fewer protons, making it harder to attract electrons
from other atoms.
item 3
metals on the right have fewer valence energy levels, so electrons are closer
to the nucleus and harder to pull away.
item 4
metals on the right have more protons, causing valence electrons to be held
more strongly.

Explanation:

Metals on the right have more protons. Protons in the nucleus attract electrons. More protons mean a stronger attraction. As we move from right to left on the periodic table, the number of protons decreases. So, valence electrons are less strongly held (since there are fewer protons to attract them), making the metal more reactive (as it can lose electrons more easily).

Answer:

Metals on the right have more protons, causing valence electrons to be held more strongly.