WorksheetsMolecular Orbital Theory
Total questions: 10
Worksheet time: 8mins
Atoms that are sp2 hybridized form ____ pi bond(s).
0
1
2
3
Which of the following statements is true?
Electrons are never found in an antibonding MO.
All antibonding MOs are higher in energy than the atomic orbitals of which they are composed.
Antibonding MOs have electron density mainly outside the space between the two nuclei.
Two of the statements are true.
The electron configuration of a particular diatomic species is (σ2s)2(σ*2s)2(σ2p)2(π2p)2(π*2p)4. What is the bond order for this species?
1.5
1
0.5
0
What is the bond order of He2+?
2
0
1/2
1
If four orbitals on one atom overlap four orbitals on a second atom, how many molecular orbitals will form?
1
4
8
16
None of the answers are correct
When comparing Be2 and H2:
I.Be2 is more stable because it contains both bonding and antibonding valence electrons.
II.H2 has a higher bond order than Be2.
III.H2 is more stable because it only contains σ1s electrons.
IV.H2 is more stable because it is diamagnetic, whereas Be2 is paramagnetic.
I, II
III, IV
II, III
II, IV
If a molecule demonstrates paramagnetism, then :
I.The substance can have both paired and unpaired electrons.
II.The bond order is not a whole number.
III.It can be determined by drawing a Lewis structure.
IV.It must be an ion.
I, II
II,III
I, II, IV
I only
For which of the following diatomic molecules would the bond order become greater if an electron is removed (i.e., if the molecule is converted to the positive ion in its ground state)?
B2
C2
H2
F2
How many of the following: F2, B2, O2, N2 , are paramagnetic?
4
1
2
3
What are the essential conditions to form a molecule from combination of AOs?
Energy of AOs should be similar
Overlap between AOs should be maximum
Combining AOs should have similar symmetry
All of the above
