Question

4

unlike neutral atoms, ions have charges because they have unequal numbers of protons and electrons. given this information, which two substances in the table are ions?

substance a

substance b

substance c

substance d

Explanation:

Step1: Analyze Substance A

Protons = 3, Electrons = 3. Since protons = electrons, it is a neutral atom.

Step2: Analyze Substance B

Protons = 35, Electrons = 36. Protons ≠ electrons. So, it is an ion.

Step3: Analyze Substance C

Protons = 19, Electrons = 18. Protons ≠ electrons. So, it is an ion.

Step4: Analyze Substance D

Protons = 16, Electrons = 16. Since protons = electrons, it is a neutral atom.

Answer:

Substance B, Substance C