Exam1- B Key

Exam1- B Key - Exam 1 Form B 1 C 2 A 3 A 4 E 5 D 6 A 7 D 8...

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Exam 1 – Form B 1. C 2. A 3. A 4. E 5. D 6. A 7. D 8. D 9. C 10. E 11. B 12. B 13. A 14. C 15. E 16. 35 p + , 44 n o , 36 e 79 Br 1 12 p + , 10 n o , 10 e 22 Mg 2+ 17. a) Rb 5s b ) B r 4 p c ) R h 4 d 18. (3 points each) How many unpaired electrons are in the following atoms? a ) R b 1 b ) B r 1 c ) R h 3 19. a) Sn 5s 2 5p 2 b ) O s 6 s 2 5d 6 20. (2 points each) In each pair , circle the lower energy orbital 4 s o n T i O R 3 d o n T i 3 s o n N a O R 3 p o n P 2 p o n O O R 2 p o n S 21. Be beryllium P phosphorus Cr chromium 22. a) Co(NO 2 ) 2 c o b a l t ( I I ) n i t r i t e b ) K 2 Cr 2 O 7 p o t a s s i u m d i c h r o m a t e c ) V 2 O 3 v a n a d i u m ( I I I ) o x i d e 23. a) lead(II) iodide PbI 2 b) potassium carbonate K 2 CO 3 c ) c e s i u m b r o m i d e C s B r 24. a) What is the mass of 3.50 x 10 23 Na atoms? atoms 10 x 6.02 g 22.99 x atoms 10 x .50 3 23 23 b) How many moles of S are in a sample of Na
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1. Which of the following samples contains the greatest mass? A) 3 x 10 23 Ar atoms B) 2 mol Be C) 1 mol Cl D) 3 mol Li E) 6 x 10 23 Si atoms 2. Which of the following samples contains the least number of atoms? A) 32 g of Cu B) 3 g of H C) 32 g of O D) 30 g of Ne E) 72 g of Ge 3. From the following set of scenarios, select the one at lowest energy. A
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This note was uploaded on 03/19/2012 for the course CH 101 taught by Professor Bigham during the Spring '08 term at N.C. State.

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Exam1- B Key - Exam 1 Form B 1 C 2 A 3 A 4 E 5 D 6 A 7 D 8...

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