Which option correctly describes the pattern of reactivity and electronegativity in nonmetals?(1 point) Both reactivity and electronegativity decrease down a group.

Reactivity decreases down a group, and electronegativity increases down a group.

Both reactivity and electronegativity decrease up a group.

Reactivity increases down a group, and electronegativity decreases down a group.

A

Explanation:

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c

Explanation:

Assuming atoms are shaped like spheres, what subatomic particles would be found in the center? What subatomic particles would be found around the perimeter? Center (nucleus) – protons & neutrons. Perimeter - electrons 3.

The three main subatomic particles that form an atom are protons, neutrons, and electrons. The center of the atom is called the nucleus. First, let's learn a bit about protons and neutrons, and then we will talk about electrons a little later. Protons and neutrons make up the nucleus of an atom.

Explanation: