Question

an atom with a positive or negative net charge is called an ion. select all of the models of ions. (four diagrams with proton, neutron, electron labels are shown.)

Explanation:

To determine the models of ions, we use the definition: an ion has a net positive or negative charge, meaning the number of protons (positive charge) ≠ number of electrons (negative charge). Let's analyze each model:

Top - Left Model:

• Protons: 4, Neutrons: 2, Electrons: 2.
• Net charge: \( 4(+) + 2(0) - 2(-) = +2 \) (protons ≠ electrons → ion).

Top - Right Model:

• Protons: 5, Neutrons: 3, Electrons: 4.
• Net charge: \( 5(+) + 3(0) - 4(-) = +1 \) (protons ≠ electrons → ion).

Bottom - Left Model:

• Protons: 1, Neutrons: 1, Electrons: 0.
• Net charge: \( 1(+) + 1(0) - 0(-) = +1 \) (protons ≠ electrons → ion).

Bottom - Right Model:

• Protons: 3, Neutrons: 1, Electrons: 1.
• Net charge: \( 3(+) + 1(0) - 1(-) = +2 \) (protons ≠ electrons → ion).

Wait, but maybe I miscounted. Let’s re - check the electron positions (blue dots) and proton counts (yellow +):

• Top - Left: Protons = 4, Electrons = 2 (two blue dots). \( 4 - 2 = +2 \) (ion).
• Top - Right: Protons = 5, Electrons = 4 (four blue dots). \( 5 - 4 = +1 \) (ion).
• Bottom - Left: Protons = 1, Electrons = 0 (no blue dots). \( 1 - 0 = +1 \) (ion).
• Bottom - Right: Protons = 3, Electrons = 1 (one blue dot). \( 3 - 1 = +2 \) (ion).

But maybe the intended analysis is simpler: an ion has unequal protons and electrons. So all four? Wait, no—maybe I made a mistake. Wait, let's count again:

• Top - Left: Protons (yellow +) = 4, Electrons (blue) = 2. 4 ≠ 2 → ion.
• Top - Right: Protons = 5, Electrons = 4. 5 ≠ 4 → ion.
• Bottom - Left: Protons = 1, Electrons = 0. 1 ≠ 0 → ion.
• Bottom - Right: Protons = 3, Electrons = 1. 3 ≠ 1 → ion.

But maybe the original problem has a different count. Wait, perhaps the bottom - left: proton (1), neutron (1), electron (0). So charge +1 (ion). Bottom - right: protons (3), neutron (1), electron (1). Charge +2 (ion). Top - left: protons (4), neutrons (2), electrons (2). Charge +2 (ion). Top - right: protons (5), neutrons (3), electrons (4). Charge +1 (ion). So all four are ions? But maybe the question expects specific ones. Wait, maybe I miscounted electrons. Let's check the electron dots:

• Top - Left: two blue dots (electrons) → 2 electrons. Protons: 4. 4 - 2 = +2 (ion).
• Top - Right: four blue dots → 4 electrons. Protons: 5. 5 - 4 = +1 (ion).
• Bottom - Left: zero blue dots → 0 electrons. Protons: 1. 1 - 0 = +1 (ion).
• Bottom - Right: one blue dot → 1 electron. Protons: 3. 3 - 1 = +2 (ion).

So all four models represent ions because in each, the number of protons (positive charge carriers) is not equal to the number of electrons (negative charge carriers), resulting in a net charge.

Answer:

All four models (top - left, top - right, bottom - left, bottom - right) are models of ions. If we assume the options are labeled (e.g., A: top - left, B: top - right, C: bottom - left, D: bottom - right), the answer is A, B, C, D.