Question

Why does the reactivity of metals increase from right to left on the periodic table?(1 point)
Responses

Metals on the right have fewer protons, making it harder to attract electrons from other atoms.
Metals on the right have fewer protons, making it harder to attract electrons from other atoms.

Metals on the right have fewer valence energy levels, so electrons are closer to the nucleus and harder to pull away.
Metals on the right have fewer valence energy levels, so electrons are closer to the nucleus and harder to pull away.

Metals on the right have more valence energy levels, so the ability of the nucleus to attract electrons is reduced.
Metals on the right have more valence energy levels, so the ability of the nucleus to attract electrons is reduced.

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

Answer 1

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

Explanation: Across a period nuclear charge increases (more protons), so atoms hold their valence electrons more tightly and are less willing to lose them. Metals on the left have fewer protons and lose electrons more easily, so they are more reactive.