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Valence Bond
Quiz 1
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Q.1
A diatomic molecule like O2 is always_______ because electrons are shared ________.
nonpolar; equally
polar; equally
nonpolar; unequally
nonpolar; unequally
Q.2
The new repulsive force(s) (ie. when atoms come together)
EA - EB
NA - NB
NB - EB
NA - EB
Both A & B
Q.3
The new attractive force(s) (ie. when atoms come together)
NA - EB
NB - EA
NA - NB
EA - EB
Both A & B
Q.4
Atoms that are sp2 hybridized form ____ pi bond(s).
0
1
2
3
4
Q.5
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
Q.6
Greater the overlap of the orbitals, _________________________
lesser the bond strength
greater the bond strength
bond strength remains the same
no bond formation
Q.7
S-s overlap is a _______
\sigma\ Bondσ Bond
π Bond\pi\ Bondπ Bond
Q.8
Px - px overlap (perpendicular to internuclear axis) is a _______
\sigma\ Bondσ Bond
π Bond\pi\ Bondπ Bond
Q.9
Choose all the old attractive force(s) (ie. when atoms are isolated)
NA - EA
NB - EB
NA - EB
NB - EA
Both A & B
Q.10
The electronegativity difference in the bonds of CCl4 (carbon tetrachloride) is:
0.4
0.5
9.5
5.5
Q.11
The electronegativity difference in the bonds of CH4 (methane) is:
0.4
5.9
-0.4
1.7
Q.12
When you are asked to find bond polarity, compare EN values of each bonding atom to the central atom
true
false
Q.13
If Boron bonds with Hydrogen, a ____________ bond forms.
polar covalent
nonpolar covalent
metallic
ionic
Q.14
A bond with a partially negative end and a partially positive end is:
ionic
polar
non-polar
isometric
Q.15
Electronegativity is a measurement of the ability of a nucleus to...
attract bonding electrons
attract other nuclei
attract elenece in the non-valence energy levels
All of above
Q.16
In a polar covalent bond, electrons are shared ___________.
equally
unequally
between non-metals with similar electronegativities
between a metal and a non-metal
Q.17
In covalent bonds, electrons are ___________.
transferred
gained
lost
shared
Q.18
Energy released during bond formation is called
Bond Creation Energy
Disassociation Energy
Binding Energy of Molecules
Bond Enthalpy
Q.19
Which is the stronger bond?
\sigma\ Bondσ Bond
π Bond\pi\ Bondπ Bond
Q.20
Choose all possible overlaps
positive overlap
zero overlap
negative overlap
All of above
0 h : 0 m : 1 s
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