1. A valid lewis structure of _____ cannot be drawn without violating the octet

Question

1. A valid lewis structure of _____ cannot be drawn without violating the octet rule. A) PCI3 B) SO3 C) CCI4 D) CIF3
2. Which of each pair is the more polar bond? Pair I: F---O vs F---B Pair II: Si---I vs Si---Br
A) F---O and Si---I B) F---B and Si---I C) F---O and Si---Br D) F---B and Si---Br

1. A valid lewis structure of _____ cannot be drawn without violating the octet rule. A) PCI3 B) SO3 C) CCI4 D) CIF3
2. Which of each pair is the more polar bond? Pair I: F---O vs F---B Pair II: Si---I vs Si---Br
A) F---O and Si---I B) F---B and Si---I C) F---O and Si---Br D) F---B and Si---Br

A) PCI3 B) SO3 C) CCI4 D) CIF3
2. Which of each pair is the more polar bond? Pair I: F---O vs F---B Pair II: Si---I vs Si---Br
A) F---O and Si---I B) F---B and Si---I C) F---O and Si---Br D) F---B and Si---Br

A) PCI3 B) SO3 C) CCI4 D) CIF3
2. Which of each pair is the more polar bond? Pair I: F---O vs F---B Pair II: Si---I vs Si---Br
A) F---O and Si---I B) F---B and Si---I C) F---O and Si---Br D) F---B and Si---Br

Explanation / Answer

1)

CIF3 is the only substance that will NOT follow th eoctet rule... it will have extra electorn pairs

2)

most polar bonding

F-O vs F-B : since electronegativity difference is higher between F and B

SI - I vs Si -- Br Since Br is more electronegative than I; the difference is higher; therefore more polar

3)

NOTE: F-O is the worst combination since electronegativities are pretty near

A) F---O and Si---I

B) F---B and Si---I

C) F---O and Si---Br

D) F---B and Si---Br

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