Question

1. what is the maximum number of electrons in the first energy level? a) 2 b) 8 c) 18 18. what does the term \period\ in the periodic table refer to? a) a vertical column b) a horizontal row c) a group of isotopes 19. what type of element is found on the far right of the periodic table? a) metals b) nonmetals c) metalloids 20. which statement about neutrons is true? a) they have a positive charge b) they have no charge c) they have a negative charge part 2: true or false 21. protons and neutrons are located in the nucleus of an atom. (true/false) 22. electrons have a greater mass than protons. (true/false) 23. isotopes have the same atomic number but different mass numbers. (true/false) 24. the periodic table was first arranged by atomic number. (true/false) 25. quarks are fundamental particles that make up electrons. (true/false)

Explanation:

1. The first energy level can hold a maximum of 2 electrons based on electron - shell capacity rules.
2. In the periodic table, a period is a horizontal row.
3. Nonmetals are located on the far right of the periodic table.
4. Neutrons are neutral particles with no charge.
5. Protons and neutrons are indeed in the nucleus of an atom.
6. Protons have a much greater mass than electrons.
7. Isotopes of an element have the same atomic number but different mass numbers due to different numbers of neutrons.
8. The periodic table was first arranged by atomic mass, not atomic number.
9. Quarks make up protons and neutrons, not electrons.

Answer:

1. a) 2
2. b) A horizontal row
3. b) Nonmetals
4. b) They have no charge
5. True
6. False
7. True
8. False
9. False