Fill in the blanks. 1. Electrons have a negative charge. 2. Protons have a positive charge. 3. Neutrons have no charge. 4. The subatomic particles in the nucleus of an atom are pro... Fill in the blanks. 1. Electrons have a negative charge. 2. Protons have a positive charge. 3. Neutrons have no charge. 4. The subatomic particles in the nucleus of an atom are protons and neutrons. 5. The subatomic particles that travel around the nucleus are electrons. 6. What does the atomic number tell you? 7. What is atomic weight? 8. How many electrons can the first ring around a nucleus hold? How many electrons can the second ring hold? How many electrons can the 3rd ring hold?
Understand the Problem
The question is asking for information related to the structure of an atom, specifically about subatomic particles, atomic numbers, and electron configuration.
Answer
6. Number of protons. 7. Average mass of isotopes. 8. First ring: 2, second: 8, third: 18.
- The atomic number tells you the number of protons in an atom, which defines the element. 7. Atomic weight is the average mass of the atom, accounting for isotopes. 8. The first ring can hold 2 electrons, the second 8 electrons, and the third up to 18 electrons.
Answer for screen readers
- The atomic number tells you the number of protons in an atom, which defines the element. 7. Atomic weight is the average mass of the atom, accounting for isotopes. 8. The first ring can hold 2 electrons, the second 8 electrons, and the third up to 18 electrons.
More Information
The atomic number is crucial for identifying the element, and atomic weight is used to account for the different isotopes of an element.
Tips
Remembering the Bohr model helps in visualizing electron placement in different shells.
Sources
- Lesson 4.1: Protons, Neutrons, and Electrons - acs.org
- Sub-Atomic Particles - Chemistry LibreTexts - chem.libretexts.org
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