2019-2020 Chem329 Midyear Exam LDS Worksheet

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Name: ________________________________________________ Period:_______

Determine the LDS for the following substances (besides total #ve work, correct LDS, also include the 2 sentence description as discussed in class):

1) H₂O₁

Total #ve^-: __________________________
Correct LDS:

Sentence 1:_______________________________________ Hint: Central atom?

Sentence 2:_______________________________________Hint: Bonding type?

2) N₁F₃:

Total #ve^-: __________________________
Correct LDS:

Sentence 1:_______________________________________ Hint: Central atom?

Sentence 2:_______________________________________Hint: Bonding type?

3) S₁O₄^2-:

Total #ve^-: __________________________
Correct LDS:

Sentence 1:_______________________________________ Hint: Central atom?

Sentence 2:_______________________________________Hint: Bonding type?