6. How does the ground state electron configuration of the hydrogen atom differ from that of a ground state helium atom? a. Hydrogen has one electron in a higher energy level. b. Hydrogen has two electrons in a lower energy level. $$ \begin{array}{l} ext { c. Hydrogen contains a half-filled orbital. } \ ext { d. Hydrogen contains a completely filled orbital. }\end{array} $$ $$ \begin{array}{l} ext { 7. Which electron configuration represents an atom in an excited state? } \ \begin{array}{ll} ext { a. } 1 s^{2} 2 s^{2} 2 p^{6} & ext { c. } 1 s^{2} 2 s^{2} 2 p^{5} \ ext { b. } 1 s^{2} 2 s^{2} 2 p^{5} 3 s^{1} & ext { d. } 1 s^{2} 2 s^{2} 2 p^{6} 3 s^{1}\end{array} \ \begin{array}{ll} ext { 8. Which of the following represents an impossible electron configuration? } \ \begin{array}{ll} ext { a. } 1 s^{2} 2 s^{2} 2 p^{6} 3 s^{2} 3 p^{6} 4 s^{2} 3 d^{5} & ext { c. } 1 s^{2} 2 s^{2} 2 p^{6} 3 s^{3} 3 p^{6} 4 s^{2} 3 d^{2}\end{array} \ ext { b. } 1 s^{2} 2 s^{2} 2 p^{6} 3 s^{2} 3 p^{6} 4 s^{1} & ext { d. } 1 s^{2} 2 s^{2} 2 p^{6} 3 s^{2} 3 p^{6}\end{array}\end{array} $$.

Question

6. How does the ground state electron configuration of the hydrogen atom differ from that of a ground state helium atom? a. Hydrogen has one electron in a higher energy level. b. Hydrogen has two electrons in a lower energy level. $$ \begin{array}{l}	ext { c. Hydrogen contains a half-filled orbital. } \ 	ext { d. Hydrogen contains a completely filled orbital. }\end{array} $$ $$ \begin{array}{l}	ext { 7. Which electron configuration represents an atom in an excited state? } \ \begin{array}{ll}	ext { a. } 1 s^{2} 2 s^{2} 2 p^{6} & 	ext { c. } 1 s^{2} 2 s^{2} 2 p^{5} \ 	ext { b. } 1 s^{2} 2 s^{2} 2 p^{5} 3 s^{1} & 	ext { d. } 1 s^{2} 2 s^{2} 2 p^{6} 3 s^{1}\end{array} \ \begin{array}{ll}	ext { 8. Which of the following represents an impossible electron configuration? } \ \begin{array}{ll}	ext { a. } 1 s^{2} 2 s^{2} 2 p^{6} 3 s^{2} 3 p^{6} 4 s^{2} 3 d^{5} & 	ext { c. } 1 s^{2} 2 s^{2} 2 p^{6} 3 s^{3} 3 p^{6} 4 s^{2} 3 d^{2}\end{array} \ 	ext { b. } 1 s^{2} 2 s^{2} 2 p^{6} 3 s^{2} 3 p^{6} 4 s^{1} & 	ext { d. } 1 s^{2} 2 s^{2} 2 p^{6} 3 s^{2} 3 p^{6}\end{array}\end{array} $$.

Gross Flynn · Accepted Answer

**6. c. Hydrogen contains a half-filled orbital.** **7. b. $$1s^{2} 2s^{2} 2p^{5} 3s^{1}$$** **8. c. $$1s^{2} 2s^{2} 2p^{6} 3s^{3} 3p^{6} 4s^{2} 3d^{2}$$**

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