Chapter 10

Question 1

What is the name of a structure with two atoms beside the central atom, three atoms, four atoms, five atoms, and six atoms? What are their bond angle?

Answer 1

Two- linear 180
Three- trigonal planar 120
Four- tetrahedral 109.5
Five- trigonal bypyramidal 90 and 120
Six- octahedral 90

Question 2

What is a structure with one bonded atom and one pair of free electrons? What’s its bond angle?

Answer 2

Linear

Question 3

What is a structure with two bonded atoms and one pair of free electrons? What’s its bond angle?

Answer 3

Angular or bent

<120

Question 4

What is a structure with three bonded atoms and one pair of free electrons? What’s its bond angle?

Answer 4

Trigonal pyramidal

<109.5

Question 5

What is a structure with two bonded atoms and two pairs of free electrons? What’s its bond angle?

Answer 5

Angular or bent

<109.5

Question 6

What is a structure with four bonded atoms and one pair of free electrons? What’s its bond angle?

Answer 6

See-saw
<90
<120

Question 7

What is a structure with three bonded atoms and two pairs of free electrons? What’s its bond angle?

Answer 7

T-shaped

<90

Question 8

What is a structure with five bonded atoms and one pair of free electrons? What’s its bond angle?

Answer 8

Square pyramidal

<90

Question 9

What is a structure with four bonded atoms and two pairs of free electrons? What’s its bond angle?

Answer 9

Square planar

90

Question 10

How do you know if a structure is polar or non polar?

Answer 10

If it has free electrons, it is polar
If it doesn’t use this:
Linear is non polar (if all the same atoms)
Trigonal planar is non polar (if all the same atoms)
Tetrahedral is non polar (if all the same atoms)
Trigonal bipyramidal is non polar (if all the same atoms)
Octahedral is non polar (if all the same atoms)

Question 11

How do you know if a bond is polar?

Answer 11

If the two bonding atoms have sufficiently different electro negativities