HW 11-18-08

HW 11-18-08 - The element has 12 electrons. The highest...

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Joseph Leonard Green P119 #23,24,25,28,29,30 11/18/08 23. Write the orbital notation for the following elements. a. P b. B c. Na d. C a. b. c. d. 24. Write the electron-configuration notation for an unidentified element that contains the following number of electrons: a. 3 b. 6 c. 8 d. 13 a. 1s²2s¹ b. 1s²2s²2px¹2py¹ c. 1s²2s²2px²2py¹2pz¹ d. 1s²2s²2px²2py²2pz²3s²3px¹
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25. Given the electron configuration for oxygen is 1so 2so 2po ,   answer the following questions: a. How many electrons are in each atom? 8 b. What is the atomic number of this element? 8 c. Write the orbital notation for oxygen’s electron configuration. d. How many unpaired electrons does oxygen have? 2 e. What is the highest occupied energy level? 2p f. How many inner-shell electrons does the atom contain? 4 g. In which orbital(s) are these inner-shell electrons located? 1s and 2s 28. a) What information is given by the noble-gas notation [Ne]3s²?
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Unformatted text preview: The element has 12 electrons. The highest energy level for the element is 3s. There are 10 inner-shell electrons. b) What element does this represent? Magnesium (Mg) 29. Write both the complete electron-configuration notation and the noble-gas notation for each of the following elements. a. Na b. Sr c. P a. 1s2s2p 3s or [Ne]3s b. 1s2s2p 3s3p 3d4s4p 5s or [Kr]5s c. 1s2s2p 3s 3p or [Ne]3s3p 30. Identify each of the following atoms on the basis of its electron configuration: a. 1s2s2p b. 1s2s2po c. [Ne]3s d. [Ne]3s3p e. [Ne]3s3po f. [Ar]4s g. [Ar]3d 4s a. Boron (B) b. Fluorine (F) c. Magnesium (Mg) d. Silicon (Si) e. Chlorine (Cl) f. Potassium (K) g. Iron (Fe)...
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HW 11-18-08 - The element has 12 electrons. The highest...

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