Molecular Geometry

Question 1

sigma = single bond

tetrahedral - how many sigma bonds? how many L.P.?

Answer 1

4 sigma, 0 LP

Question 2

sigma = single bond

trigonal pyramidal - how many sigma bonds? how many LP?

Answer 2

3 sigma bonds, 1 LP

Question 3

signma = single bond

bent - how many sigma bonds? how many LP?

Answer 3

2 sigma bonds, 2 LP

Question 4

sigma - single bonds

trigonal planar - how many sigma bonds? how many LP?

Answer 4

3 sigma bonds, 0 LP

Question 5

tetrahedral bond angle?

Answer 5

109.5

Question 6

trigonal planar bond angle?

Answer 6

107

Question 7

bent bond angle?

Answer 7

105

Question 8

trigonal planar bond angle?

Answer 8

120

Question 9

dipole moments indicate ?

Answer 9

polarity

Question 10

a dipole moment occurs when the centre of a (____) and the centre of a (______) are (________) by a (__________) .

Answer 10

a dipole moment occurs when the centre of a NEGATIVE CHARGE and the centre of a POSITIVE CHARGE are SEPARATED by a CERTAIN DISTANCE.

Question 11

the dipole moment of a bond can tell us the (___________) within the bond

Answer 11

the dipole moment of a bond can tell us the % OF IONIC CHARACTER within the bond

Question 12

resonance struture patterns

what is a CONJUGATED BOND?

Answer 12

pi bonds separated from each other by 1 sigma bond

pi = double, sigma = single

Question 13

resonance strucutres

PARTICIPATES in resonance - localized or delocalized LP?

Answer 13

DElocalized LP’s

Question 14

resonance structures

delocalized LP’s affect an atoms..?

Answer 14

geometry