Final answer:
In the Bohr Model of atomic structure, electrons are arranged in energy levels or orbits. The statements about valence electrons in the given elements are evaluated and matched to the correct sublevel block.
Step-by-step explanation:
4. Decide whether each of the following statements is true or false.
(a) Li has valence electrons in the n = 1 energy level. True. The electron configuration of Li is 1s² 2s¹, so it has one valence electron in the 2s orbital, which is in the n = 2 energy level.
(b) Si has valence electrons in the n = 3 energy level. False. The electron configuration of Si is 1s² 2s² 2p⁶ 3s² 3p², so it has two valence electrons in the 3p orbital, which is in the n = 3 energy level.
(c) Ga has valence electrons in the n = 3 energy level. True. The electron configuration of Ga is 1s² 2s² 2p⁶ 3s² 3p⁶ 4s² 3d¹⁰ 4p¹, so it has three valence electrons in the 4p orbital, which is in the n = 4 energy level.
(d) Xe has valence electrons in the n = 5 energy level. False. The electron configuration of Xe is 1s² 2s² 2p⁶ 3s² 3p⁶ 4s² 3d¹⁰ 4p⁶ 5s² 4d¹⁰ 5p⁶, so it has eight valence electrons in the 5p orbital, which is in the n = 6 energy level.
(e) P has valence electrons in the n = 2 energy level. False. The electron configuration of P is 1s² 2s² 2p⁶ 3s² 3p³, so it has five valence electrons in the 3p orbital, which is in the n = 3 energy level.
5. Match the element to the sublevel block it is found in:
- Li - s block
- Si - p block
- Ga - p block
- Xe - p block
- P - p block