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WorksheetsMolecular orbital diagrams S-P mixing
Total questions: 20
Worksheet time: 14mins
------------------is the visual representation of the relative energy levels of molecular orbitals.
(a)
Bonding molecular orbitals possess ---------------electron density .
Low
moderate
Higher
Every electron in the anti bonding molecular orbital makes its contribution to the ---------- of two combining atoms.
Repulsion
Attraction
Stability
Same sign
Bonding molecular orbitals are formed when the lobes of combining orbitals with
Opposite sign
Same sign
No need of sign
Anti bonding MO impart --------to the molecule .
Instability
Repulsion
Lower energy
1&2
Moving from left to right 2p electrons are ----------- but 2s electrons remains constant .
(a)
The Zeeman effect increases the energy gap between energy levels --------------
(a)
σ 1s﹤ σ*1s﹤σ2s﹤σ*2s﹤[π2px=π2py]﹤σ2pz﹤[π*2px=π*2py]﹤ σ*2pz
Applicable From H2 to N2
Applicable From O2 to Ne2
The distribution of electron density in the bonding and antibonding molecular orbitals formed follows ------------ rules
(a)
From B2 to N2 the gap between S and P is Less. Hence------------ phenomenon is possible.
(a)
Bond order of N2 is -------
2
7
3
0
How many anti bonding electrons are in O2 molecule
6
4
8
2
As the bond order increases ,
Bond strengths increases
Dissociationenergy increases
Bond length decreases
All
How many lone pair electrons are in F2 molecule
2
1
0
3
-Ve or zero value of bond order means
Molecule is unstable and exist
Molecule is unstable and does not exist
Molecule is stable and exist
Molecule is stable and does not exist
This orbital diagram represents
Nitrogen
Oxygen
Carbon
Neon
Which orbital has nodal plane????
BMO
ABMO
NBMO
All of these
What is the bond order of He2+?
2
0
1/2
1
1 1/2
If four orbitals on one atom overlap four orbitals on a second atom, how many molecular orbitals will form?
1
4
8
16
