Do electrons like other electrons?

Do electrons like other electrons?

7th inning stretch Draw the Lewis structure for each: 1. PCl3 2. SCl2 3. CS2 4. CH4

7th inning stretch Draw the Lewis structure for each: 1. PCl3 2. SCl2 3. CS2 4. CH4

The lewis structure of water: H 2 X 1e- =2e- O 1 X 6e- =6eTotal .. unshared e-

: O __ H H Shared e- 8e- 4e- bonded 4 e-

Water has 2 shared & 2 unshared pairs of e- What did you observe? + e move towards the protons -

What holds electrons in an atom? e like protons - Do electrons like each other electrons? NO

- - What did you observe between the electrons? e- Repel e- move as far away from each other.. However, they do exist in pairs

(remember two per e cloud shape) V S E P R THEORY Draw the following table:

# OF # TOTAL Share PAIRS - de Pairs #

Unshar ed ePairs Shape Picture Example s

V S E P R # OF TOTAL PAIRS

2 # Share ePairs 2 3 3

Shape # Unshare d e- Pairs 0 0

linear Trigonal Planar 4 4 0 Tetrahedral THEORY 2 2

Examples CO 2 4 3 1 Pyramidal 4 Picture

Bent Cl2 BCl3 CH2O NH3 PCl3 CH4 CBr4

SCl2 H2O Pyramidal Bent Molecule Phet 1. Which is a molecule?

A. CO2 B. CaCl2 C. NH4Cl D. Li2SO4 2. Which would have a linear shape? A. HBr B. CO2 C. Both are linear

3. Which has only single bonds? A. HBr B. CO2 C. Both have all single bonds 4. What shape is water? A. B.

C. D. Tetrahedral Bent Trigonal planar Linear 5. Which is an example of an exception to the octet rule?

A. O2 B. N2 C. BF3 D. I2 E. More than one of these 5ans. Which is an example of an exception to the octet rule?

A. O2 B. N2 C. BF3 D. I2 E. More than one of these 6. Which molecule could be represented with this diagram?

A. BH3 B. CH4 C. NH3 7. Which molecule could be represented with this diagram? A. HCl B. CH4

C. NH3 D. F2

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