CHEM-C 101 Exam 2

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(IUI FALL 2026)

Last updated 5:36 PM on 10/14/26
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19 Terms

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<p>Linear</p>

Linear

2 bonded atoms with 0 lone pairs around the central atom with 180° bond angles, ex. CO2

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<p>Trigonal Planar</p>

Trigonal Planar

3 bonded atoms with 0 lone pairs around the central atom with 120° bond angles, ex. SO3

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<p>Bent</p>

Bent

  1. 3 atoms bonded to the central atom with 1 lone pair and <120° bond angles,


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<p>Tetrahedral</p>

Tetrahedral

  1. 4 atoms bonded to the central atom

  2. 0 lone pairs

  3. 109.5°

  4. Example: CH4


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<p>Trigonal Pyramid</p>

Trigonal Pyramid

  1. 3 bonded atoms to central atom

  2. 1 lone pair

  3. <109.5° (~107°)


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<p>Bent</p>

Bent

  1. 2 bonded atoms

  2. 2 lone pair

  3. <109.5° (~105°)

  4. example, H2O


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<p>octahedral</p>

octahedral

  1. 6 electron groups

  2. 0 lone pairs

  3. 90°, 90°


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Phosphate

PO43-

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Carbonate

CO3-

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Hydroxide

OH-

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Sulfate

SO42-

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Cyanide

CN-

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Ammonium

NH3-

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Octet rule

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Polar covalent bond

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non polar covalent bond

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electronegativity

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ionic bond

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