1.3. Shapes of Molecules and Polyatomic Ions

Question 1

What does VSEPR stand for?

Answer 1

Valence Shell Electron Pair Repulsion

Question 2

What is the VSEPR rule?

Answer 2

The shape of a molecule is effected by the repulsion of electron pairs.

Question 3

How do you calculate the number of pairs in a molecule?

Answer 3

Outer electrons of central metal atom + the amount of each addition atom / 2. If negative ion you add the charge. If positive ion you subtract the charge.

Question 4

If a molecule has 2 bonding pairs and no non-bonding pairs, what is its structure?

Answer 4

Linear.

Question 5

If a molecule has 3 bonding pairs and no non-bonding pairs, what is its structure?

Answer 5

Trigonal planar.

Question 6

If a molecule has 2 bonding pairs and 1 non-bonding pair OR 2 bonding pairs and 2 non-bonding pairs, what is its structure?

Answer 6

Bent.

Question 7

If a molecule has 4 bonding pairs and no non-bonding pairs, what is its structure?

Answer 7

Tetrahedral.

Question 8

If a molecule has 3 bonding pairs and 1 non-bonding pair, what is its structure?

Answer 8

Trigonal pyramidal.

Question 9

If a molecule has 5 bonding pairs and 1 non-bonding pair, what is its structure?

Answer 9

Trigonal bipyramidal.

Question 10

If a molecule has 3 bonding pairs and 2 non-bonding pairs, what is its structure?

Answer 10

T-Shaped.

Question 11

If a molecule has 6 bonding pairs and no non-bonding pairs, what is its structure?

Answer 11

Octahedral.

Question 12

If a molecule has 4 bonding pairs and 2 non-bonding pairs, what is its structure?

Answer 12

Square planar.