*The shape of the hybridized sp3 orbital in Carbon is like a _____________.

fat exclam. mark w/ a large oval on top with a bottom sphere

An unshared pair of electrons on an atom is ___________________.

a pair of e- that doesn't contribute to normal cov. bonding

How does Br2 make a regular single covalent bond?

Each bromine contributes 1 valence e- to the bond

* Why can elements in the 3rd period and beyond have extended octets?

electrons from s and/or p orbitals jump up to empty d orb.

*phosphorus can make 5 bonds because _________________.

one of the 3s e- jumps up to the empty 3d sublevel.

*What is the difference between electron geometry (EG) and molecular geometry (MG) ?

EG gives all e- domains while MG gives the spatial arrang.

Single, Double, and Triple bonds are respectively _______________.

shared 2, 4, and 6 electrons between two nonmetals

Lewis Dot Formulas are formulas that ___________________.

shows all of the electrons used to make the structure

A trigonal pyramidal molecular geometry has _________________.

a central atom having 1 unshared pair & bonded to 3 atoms

Which of the following isn't true in regards to covalent compounds?

covalent cmpds are formed from a metal donating e- to nonmet

Steric Number corresponds to the __________________.

# atoms bonded to the central atom & its unshared pairs of e

Valence Shell Electron Pair Repulsion Theory predicts ________________.

molecular geometries of cmpds based on unshared e- & bonds

The reason NH3 has a trigonal pyramidal shape is because the _________.

unshared pair of e- on central N atom pushes the bonds down

Polyatomic ions are _________________.

covalent compounds w/ an overall positive or negative charge

A trigonal planar molecular geometry has _______________________.

a central atom having no unshared pairs & bonded to 3 atoms

Tetrahedral molecular geometry is based on __________________.

a central atom having no unshared pairs & bonded to 4 atoms

*Resonance is determined by ______________.

the double or triple bonds moving around the structure

Which of the following statements is true in regards to Nitrogen?

It makes 3 bonds & forms single, double, and triple bonds.

A bent molecular geometry has ____________________.

a central atom having 2 unshared pairs & bonded to 2 atoms

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Covalent Bonding

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Covalent Bonding and Concepts

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Questions 39

Answers

1
*The shape of the hybridized sp³ orbital in Carbon is like a _____________.
heart
giant sphere
fat exclam. mark w/ a large oval on top with a bottom sphere
wavy line
2
*A double covalent bond is made of which type of hybridized orbitals?
2 ơ
double bonds are not made from hybridized orbitals
1 π & 1 ơ
2 π
3
An unshared pair of electrons on an atom is ___________________.
a pair of e- that causes the atom to have a positive charge
a pair of e- that causes the atom to have a negative charge
a pair of e- that only contributes to ionic bonding
a pair of e- that doesn't contribute to normal cov. bonding
4
The prefix "tetra" means _____________?
3
1
4
5
5
Hydrogen can make what type of covalent bonds?
hydrogen doesn't bond b/c it has a filled outer energy level
only single
double, triple, and single
only single and double
6
How does Br₂ make a regular single covalent bond?
Each bromine contributes 2 valence e- to the bond
Each bromine contributes 1 valence e- to the bond
One bromine donates an e- while the other accepts the e-
One of the bromines makes a coordinate covalent bond
7
These are the 7 nonmetals that bond to themselves when not bonded to another element.
All elements bond to themselves to make a diatomic element
B2 C2 N2 O2 F2 Cl2 P2
H2 O2 N2 Cl2 Br2 I2 F2
H2 Li2 Na2 K2 Rb2 Cs2 Fr2
8
When 1 of the elements contributes both electrons to a covalent bond, this is known as a(n) __
single covalent bond
ionic bond
coordinate covalent bond
unselfish bond
9
*ClO₄^- will have how many coordinate covalent bonds?
3
2
1
4
10
*An overlap of s and p orbitals resulting in a blend of both shapes is a(n) _____.
triple bond
structural formula
hybrid orbital
double bond
11
* Why can elements in the 3rd period and beyond have extended octets?
higher energy lvls means more than three p orb in a sublevel
electrons from the d orb. in the previous sublevel jump up
the 3p, 4p, 5p, and 6p sublevels can hold more than 6 e-
electrons from s and/or p orbitals jump up to empty d orb.
12
*phosphorus can make 5 bonds because _________________.
This is crazy nonsense - P only makes 3 bonds!!!
one of the 3p e- jump up to the empty 3d sublevel.
one of the 3s e- jumps up to the empty 3d sublevel.
two of the 3s e- jump up to the empty 3d sublevel.
13
Another name for a neutral covalent compound is a(n) ________________.
molecule
crystal lattice structure
polyatomic ion
diatomic element
14
Elements in the same group will _______________.
have the same number of energy levels.
make less bonds going down a group
vary in the number of bonds b/c of the diff't atomic numbers
have the same number of bonds.
15
*What is the difference between electron geometry (EG) and molecular geometry (MG) ?
EG gives all e- domains while MG gives the spatial arrang.
EG gives the spatial arrang. while MG gives all e- domains
EG makes coordin. cov. bonds while MG does not
they are the same!!!
16
Single, Double, and Triple bonds are respectively _______________.
shared 2, 4, and 6 electrons between two nonmetals
shared 1, 2, and 3 electrons between a metal and a nonmetal
shared 1, 2, and 3 electrons between two nonmetals
shared 2, 4, and 6 electrons between a metal and a nonmetal
17
Lewis Dot Formulas are formulas that ___________________.
shows the 3D arrangement of atoms around a central atom
only shows the bonds in the entire structure
only shows the unshared pairs of electrons in the structure
shows all of the electrons used to make the structure
18
A trigonal pyramidal molecular geometry has _________________.
a central atom having 2 unshared pairs & bonded to 2 atoms
a central atom having no unshared pairs & bonded to 3 atoms
a central atom having 1 unshared pair & bonded to 3 atoms
a central atom having no unshared pairs & bonded to 4 atoms
19
* carbon makes how many sp³ orbitals in CH₄?
3
2
1
4
20
Which of the following isn't true in regards to covalent compounds?
the # of covalent bonds is determined by the # of bonding e-
covalent cmpds form single, double, and triple bonds.
covalent cmpds are formed from a metal donating e- to nonmet
covalent cmpds are formed when 2 or more nonmetals share e-.
21
Steric Number corresponds to the __________________.
charge on the entire structure
number of valence electrons the central atom has.
# of double bonds on the central atom
# atoms bonded to the central atom & its unshared pairs of e
22
*a p_y orbital sideways overlap with another p_y orbital makes what kind of hybridization?
π & ơ orbitals
ơ orbitals
all of the above
π orbitals
23
Carbon can make what type of bonds with oxygen?
triple, double, single, and ionic
only single
single and double
triple, double, and single
24
*A triple covalent bond has which orbital hybridization?
sp2
sp3
sp
sp3d
25
Valence Shell Electron Pair Repulsion Theory predicts ________________.
the electron configurations for a nonmetal
molecular geometries of cmpds based on unshared e- & bonds
molecular geometries of cmpds based on charges on the cmpds
how well a cmpd will react with another cmpd
26
This structure of methane represents a _____________________.
perspective drawing
space filling model
ball and stick model
structural formula
27
*A double covalent bond has which orbital hybridization?
sp2d
sp
sp2
sp3
28
The reason NH₃ has a trigonal pyramidal shape is because the _________.
unshared pair of e- on central N atom pulls the bonds up
unshared pair of e- on central N atom pushes the bonds down
there is a double bond that causes the bonds to bend down
hydrogens are repelled by the central N atom
29
*Sigma bonds are an overlap of which orbitals?
s & s
py & py
pz & pz
none of the above
30
Polyatomic ions are _________________.
ionic compounds w/ an overall positive or negative charge
crystal lattice structures that are missing an ion
cations that have more than one charge
covalent compounds w/ an overall positive or negative charge
31
A trigonal planar molecular geometry has _______________________.
a central atom having 1 unshared pair & bonded to 3 atoms
a central atom having no unshared pairs & bonded to 3 atoms
a central atom having no unshared pairs & bonded to 4 atoms
a central atom having 2 unshared pairs & bonded to 2 atoms
32
Tetrahedral molecular geometry is based on __________________.
a central atom having no unshared pairs & bonded to 4 atoms
a central atom having 1 unshared pair & bonded to 3 atoms
a central atom having no unshared pairs & bonded to 3 atoms
a central atom having 2 unshared pairs & bonded to 2 atoms
33
How many unshared pairs of electrons does sulfur have?
none
2
3
1
34
*A triple bond is made from what hybridized orbitals?
3 ơ
1 ơ & 2 π
2 ơ & 1 π
3 π
35
*Resonance is determined by ______________.
the double or triple bonds moving around the structure
only the number of coord cov bonds moving around the struct.
the single bonds moving around the structure
the posit. or neg. charge moving around the structure
36
Which of the following statements is true in regards to Nitrogen?
it makes 3 bonds & forms only single and double bonds.
it makes 2 bonds & forms only single and double bonds.
It makes 3 bonds & forms single, double, and triple bonds.
it makes 2 bonds & forms single, double, and triple bonds.
37
The following model of acetone is known as a(n) _________________
ball and stick model
space filling model
structural formula
perspective drawing
38
The following picture of acetone is called a(n) _____________________
perspective drawing
ball and stick model
space filling model
structural formula
39
A bent molecular geometry has ____________________.
a central atom having 2 unshared pairs & bonded to 2 atoms
a central atom having no unshared pairs & bonded to 3 atoms
a central atom having no unshared pairs & bonded to 4 atoms
a central atom having 1 unshared pair & bonded to 3 atoms

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