3D molecules

Question 1

What is the name of the molecule bonded to 2 atoms and 0 lone pairs?

Answer 1

Linear
180’

Question 2

What is the name of the molecule bonded to 3 atoms and 0 lone pairs?

Answer 2

Trigonal Planar
120’

Question 3

What is the name of the molecule bonded to 4 atoms and 0 lone pairs?

Answer 3

Tetrahedral
109.5’

Question 4

What is the name of the molecule bonded to 5 atoms and 0 lone pairs?

Answer 4

Trigonal Bipyramidal
120’ or 90’

Question 5

What is the name of the molecule bonded to 6 atoms and 0 lone pairs?

Answer 5

Octahedral
90’

Question 6

What is the name of the molecule bonded to 2 atoms and 2 lone pairs?

Answer 6

nonlinear
104.5’

Question 7

Why do some shapes have certain angles, i.e why does a tetrhedral shape have 109.5’?

Answer 7

1. Electron pairs repel
2. The central atom, has __ bonding pairs and __ lone pairs
3. Bonding pairs repel equally

Question 8

What does polar mean in a compound?

Answer 8

When a compound has 2 atoms with opposite diploes

Question 9

What does non polar mean in a compound?

Answer 9

When a compound has 2 atoms with same diploes

Question 10

Define the term electronegativity.

Answer 10

Ability of an atom to gain a pair of electrons in a covalent bond.

Question 11

Why is water a non linear molecule?

Answer 11

The 2 lone pairs in water have a greater repulsion pushing the bonds closer together

Question 12

Describe why a molecule whether __ is polar or non polar

Answer 12

-__ is symmetrical/ unsymmetrical because the dipoles cancel out
-molecule is overall polar/ non polar