Brainscape's Knowledge GenomeTM

Browse over 1 million classes created by top students, professors, publishers, and experts.


See full index

CHEM 1210 > Chapter 9: Molecular Geometry and Bonding Theories > Flashcards

Chapter 9: Molecular Geometry and Bonding Theories Flashcards

1
Q

What are the bond angles in a tetrahedron molecular shape?

A

109.5 degrees

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
2
Q

what is the MOLECULAR geometry for a molecule with THREE bonding domains and no non-bonding domains?

A

trigonal planar (flat)

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
3
Q

Does bond enthalpy go up or down as bond order goes up?

A

up (as bond enthalpy is the energy needed to break 1 mole’s worth of a given bond)

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
4
Q

what is the MOLECULAR geometry for a molecule with THREE bonding domains and TWO non-bonding domains?

A

t shaped

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
5
Q

What are the bond angles in a linear molecular shape?

A

180 degrees

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
6
Q

what is the MOLECULAR geometry for a molecule with FOUR bonding domains and no non-bonding domains?

A

tetrahedral

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
7
Q

what is the MOLECULAR geometry for a molecule with FOUR bonding domains and ONE non-bonding domains?

A

seesaw

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
8
Q

What are the bond angles in a trigonal planar molecular shape?

A

120 degrees

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
9
Q

What are the bond angles in a trigonal BI-pyramid molecular shape?

A

120 degrees and 90 degrees

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
10
Q

what is the ELECTRON geometry for a molecule with TWO electron domains?

A

linear

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
11
Q

Where do non-bonding electron pairs live in the octahedron molecular shape?

A

In the axial (up and down) plane

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
12
Q

what is the MOLECULAR geometry for a molecule with FIVE bonding domains and no non-bonding domains?

A

trigonal bypyramid

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
13
Q

Does a bond order of 1/2 mean that 1/2 of a bond will form between two atoms?

A

Not necessarily. I means that the atoms involved in this particular molecular orbital are slightly more stable/have slightly less energy than they do as two separate atoms.

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
14
Q

what is the MOLECULAR geometry for a molecule with FIVE bonding domains and THREE non-bonding domains?

A

linear

because the non-bonding domains occur equatorially

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
15
Q

Do anti-bonding originals cancel out the bond-stregnthening effects of bonding orbitals?

A

Yes, especially if the electrons in non-bonding orbitals outnumber the electrons in bonding orbitals.

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
16
Q

Which range of bond order values tell you that some level of bonding is likely to occur?

A

All bond order values greater than 0 indicate that some level of bonding is likely to occur

17
Q

Where do non-bonding electron pairs live in the trigonal bipyramid molecular shape?

A

in the equatorial (around) plane

18
Q

What are the bond angles in a octahedral molecular shape?

A

90 degrees

19
Q

According to molecular orbital theory, how does energy predict whether bonds will occur between atoms?

A

The energy of involved in having electrons in bonding molecular orbitals is LOWER than the energy involved in keeping the electrons in separate, regular regular atomic orbitals

This is true even when some electrons wind up in non-bonding molecular orbitals, provided the non-bonding orbitals don’t outnumber the bonding orbitals.

20
Q

Is bond order the only factor that plays into bond enthalpy and bond length?

A

No, Things like Zeff and orbital overlap also play a role

21
Q

Can you have fractions for bond orders?

A

Yes

22
Q

what is the MOLECULAR geometry for a molecule with TWO bonding domains and ONE non-bonding domains?

A

bent

23
Q

what is the ELECTRON geometry for a molecule with FOUR electron domains?

A

tetrahedral

24
Q

How/why does increasing the number of electrons in an anti-bonding orbitals DECREASE a molecule’s bond stability?

A

If anti-bonding electrons outnumber the bonding electrons, the net effect is that a bond is LESS likely to occur (b/c the wave functions for the electrons aren’t lining up just right to give rise to CONSTRUCTIVE wave combination)

25
Q

what is the MOLECULAR geometry for a molecule with THREE bonding domains and ONE non-bonding domains?

A

trigonal pyramid

26
Q

what is the MOLECULAR geometry for a molecule with four bonding domains and TWO non-bonding domains?

A

square planar (flat)

because the non-bonding domains are axial

27
Q

what is the MOLECULAR geometry for a molecule with TWO bonding domains and TWO non-bonding domains?

A

bent

28
Q

what is the MOLECULAR geometry for a molecule with FIVE bonding domains and ONE non-bonding domains?

A

square pyramid

because the non-bonding domain is axial

29
Q

Does bond energy get larger with higher bond order or smaller????

A

larger???

30
Q

what is the equation for bond order?

A

[(# of bonding electrons - # of NON bonding electrons)]/2

31
Q

what is the MOLECULAR geometry for a molecule with TWO bonding domains and no non-bonding domains?

A

linear

32
Q

Does bond stability go stronger with higher bond order or weaker?

A

stronger

33
Q

what is the ELECTRON geometry for a molecule with THREE electron domains?

A

trigonal planar (flat)

34
Q

Does bond length get longer or shorter as bond order increases?

A

shorter;

35
Q

what is bond order supposed to describe?

A

stability of chemical bonds between a pair of atoms

or the likelihood that bonds will form

NOT the number of bonds

36
Q

what is the ELECTRON geometry for a molecule with FIVE electron domains?

A

trigonal BIpyrimidal

37
Q

what is the MOLECULAR geometry for a molecule with SIX bonding domains and no non-bonding domains?

A

octahedral

38
Q

what is ‘delocalization’ of pi bonds meant to describe in the hybridization model?

A

the fact that when a molecule has resonance, the depiction of its double bonds is supposed to represent an average bond length/location for the electrons involved in the double bonds

39
Q

what is the ELECTRON geometry for a molecule with SIX electron domains?

A

octahedral

CHEM 1210 (18 decks)

Brainscape helps you reach your goals faster, through stronger study habits.
© 2024 Bold Learning Solutions. Terms and Conditions