The formal charges on oxygen atoms in h 2 o and h 3 o

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7. The formal charges on oxygen atoms in H 2 O and H 3 O + are………and………., respecti vely (A) 0,+1 (B) +1,0 (C) -1,0 (D) 0,-1 (E) +1,-1 8. The central atom in XeF 4 molecules has …………..nonbonding electron (lone) pairs and………………..bonding electr on pairs in its valence shell. 9. All the following compounds have expanded octet except …….. 10. Which of the following is a correct Lewis dot symbol? 11. Which of the following is a correct Lewis structure?
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2 CHEM 101 Worksheet 9 Chemical bonding Chem 101 Homework 9 Chapter 9 Chemical Bonding I 12. Which of the following is a correct Lewis structure? 13. Which of the following is NOT a correct Lewis dot structure? 14. The preferred Lewis structure of OC S is…………………. 15. The number of resonance structures for the sulfur dioxide molecule that satisfy the octet rule is…………… 16. What is the formal charge of the N atom in nitric acid? (A) 0 (B) -1 (C) +1 (D) +2 (E) -2 II. Write the Lewis structure for the following compounds (Include the formal charges and resonance structures as needed): 1. H 3 O + 2. NH 4 +
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3 CHEM 101 Worksheet 9 Chemical bonding 3. NH 3 4. H 2 S 5. C 2 H 6 6. C 2 H 2 7. SiH 4
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4 CHEM 101 Worksheet 9 Chemical bonding 8. NO 3 - 9. O 3 10. SO 2 11. SO 3 2-
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5 CHEM 101 Worksheet 9 Chemical bonding 12. ClO 3 - 13. SO 4 2- 14. PO 4 3-
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