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Chemistry Daily 10’s Week 6

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1 1. According to the quantum theory of an atom, in an orbital A. an electron's position cannot be known precisely. B. an electron has no energy. C. electrons cannot be found. D. electrons travel around the nucleus on paths of specific radii.

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2. How many quantum numbers are needed to describe the energy state of an electron in an atom? a. 1 b. 2 c. 3 d. 4

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2 1. The number of possible different orbital shapes for the third energy level is a. 1. b. 2. c. 3. d. 4.

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2. How many orientations can an s orbital have about the nucleus? a. 1 b. 2 c. 3 d. 5

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3 1. How many orbitals can exist at the third main energy level? a. 3 b. 6 c. 9 d. 18

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2. If n is the principal quantum number of a main energy level, the number of electrons in that energy level is a. n. b. 2n. c. n 2. d. 2n 2.

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4 1. If the third main energy level contains 15 electrons, how many more could it possibly hold? a. 0 b. 1 c. 3 d. 17

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2. The atomic sublevel with the next highest energy after 4p is a. 4d. b. 4f. c. 5p. d. 5s.

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5 1. Which of the following lists atomic orbitals in the correct order they are filled according to the Aufbau principle? a. 1s 2s 2p 3s 4s 3p 3d 4p 5s b. 1s 2s 2p 3s 3p 4s 3d 4p 5s c. 1s 2s 2p 3s 3p 4s 4p 3d 4d d. 1s 2s 2p 3s 3p 3d 4s 4p 5s

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2. What is the electron configuration for nitrogen, atomic number 7? a. 1s 2 2s 2 2p 3 b. 1s 2 2s 3 2p 2 c. s 2 2s 3 2p 1 d. 1s 2 2s 2 2p 2 3s 1

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Answers & Standards 1.1 – a sc3b 1.2 - d sc3b 2.1 - c sc3b 2.2 - a sc3b 3.1 – c sc3b 3.2 – d sc3b 4.1 – c sc3b 4.2 – d sc3b 5.1 – b sc3b 5.2 – a sc3b

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