11. Consider the electron configuration 1s 2s2 3s²3p63d 4s?. Which of the following statements is TRUE? (A) There are 14 electrons on the third energy level. (B) This atom has 8 valence electrons. (C) There are 3 energy levels in the atom. (D) The next electron to be added will be in sublevel 3d. 12. Which is TRUE about the 3p electrons in sulfur? (A) They travel in a figure 8 orbit (B) They are located much closer to the nucleus than the 2p electrons (C) They are the highest energy electrons in a sulfur atom (D) They shield the 2s electrons from the full charge of the nucleus.

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