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WorksheetsPOP QUIZ
Total questions: 25
Worksheet time: 13mins
s-s overlap is a _______
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π Bond
A π (pi) bond is the result of the
overlap of two s orbitals
overlap of an s orbital and a p orbital
overlap of two p orbitals along their axes
sidewise overlap of two parallel p orbitals
sidewise overlap of two s orbitals
Greater the overlap of the orbitals, _________________________
lesser the bond strength
greater the bond strength
bond strength remains the same
no bond formation
What is the hybridization of this molecule shown above
sp
sp2
sp3
sp4
What is the hybridization of the Carbon atom indicated by the arrow?
sp hybridization
sp2 hybridization
sp3 hybridization
dsp3 hybridization
Atoms that are sp2 hybridized form ____ pi bond(s).
0
1
2
3
4
BMO is formed due to
Constructive Interference
Destructive Interference
Different sign of wave function
Both 2 & 3
what is the bond order in N2
1
2
3
4
how many unpaired electrons are in O2 molecule?
1
3
2
0
what is the bond order of He2 molecule
3
1
0
2
what are the bond orders in O2, O2+,O2-
2, 3,4
2,1.5,2.5
2,2.5,1.5
2.5,2,1.5
long-range order exists
Crystalline material
Amorphous Material
Allotropy is
when more than one crystal structure is found in elemental solids
when metals and nonmetals have more than one crystal structure
Coordination number in simple cubic crystal structure
8
6
12
10
What determines whether a solid material will act as a conductor, a semiconductor or an insulator?
The energy level of the valence band
The energy level of the conduction band
The energy difference across the forbidden gap
None of the answer mentioned above
When a pentavalent impurity is added to a pure semiconductor, it becomes ………
An insulato
p-type semiconductor
n-type semiconductor
Addition of pentavalent impurity to a semiconductor creates many ……..
Free electrons
Holes
Valence electrons
A trivalent impurity has ….. valence electrons
4
5
3
In a semiconductor, current conduction is due to ……..
Only holes
Only free electrons
Holes and free electrons
Number of atoms per unit cell in a Face Centered Cubic lattice
4
1
2
6
Example for crystalline solid
Glass
Quartz
Plastic
Rubber
