Select the type of subshell that can hold the most electrons.
s
p
d
f
How many electrons are in the 3p subshell of a phosphorus atom?
one
two
three
four
five
What is the ground-state electron configuration of aluminum?
1s2 2s2 2s1
1s2 2s1 2p6 3s2
1s2 2s2 2p6 3s2 3p0
1s2 2s2 2p6 3s2 3p1
Select the quantum number that describes the type of subshell (s, p, d, or f) that an electron occupies.
n
l
ml
ms
How many valence electrons are in an atom of a group of 16 element?
six
seven
Select the valence electron configuration of a group 2 element.
ns2
ns1
ns2 np6
ns2 np5
ns2 np7
Which of these ions has the largest ionic radius?
I-
Br-
Cl-
F-
O2-
Which of these elements has the highest first ionization energy?
Ne
F
O
Li
Rb
Which of these compounds would be expected to have the greatest attraction between ions?
NaCl
MgS
MgO
AlN
AlP
As you move toward the top right corner of the periodic table atomic radius-
and first ionization energy both increase.
and first ionization energy both decrease.
decreases and first ionization energy increases.
increases and first ionization energy decreases.
Among the given choices, which of these elements has the higher ionization energy.
Be
B
Na
Among the given choices, which of these elements has the higher ionization energy?
Mg
Al
K
Among the given choices, which of these elements has the lower electron affinity?
C
N
Among the given choices, which of these elements has the lower affinity?
Select the set of quantum numbers that is NOT permitted.
n=2, l=1, ml=1, ms=+1/2
n=3, l=0, ml=1, ms=+1/2
n=1, l=0, ml=0, ms=-1/2
n=4, l=3, ml=3, ms=-1/2
n=3, l=3, ml=2, ms=+1/2
According to the VSEPR theory, what formula should be for SF4?
AX4E3
AX4E2
AX4E
AXE2
Predict the molecular geometry for a molecule with two bonded groups and two lone pairs.
linear
bent
trigonal planar
tetrahedral
trigonal bipyramidal
Identify the number of sigma and pi bonds in the CS2 molecule. S=C=S
1 sigma bond; 1 pi bond
0 sigma bonds; 2 pi bonds
2 sigma bonds; 2 pi bonds
2 sigma bonds; 0 pi bonds
Predict the molecular geometry for the SeF4 molecule.
trigonal bypyramidal
seesaw
square pyramidal
square planar
Determine the molecular geometry for PH3.
trigonal pyramidal
Which of these molecules is linear?
BeF2
SO2
NO2-
OCl2
H2O
Select the nonpolar molecule.
H2S
CS2
HCl
ClO2
How many unshared electrons (lone pairs) are in CHCl3 (chloroform) molecule?
6
12
18
24
How many unshared electrons (lone pairs) are in NF3 molecule?
8
20
What are the formal charges of C and O, respectively in carbon monoxide?
-1,+1
0,0
0,+1
-1,0
Which of these molecules is likely to be an exception to the octet rule?
PCl3
BF3
NH3
Which Lewis structure uses an expanded octet?
BH3
CN-
SF4
What is the formal charge on chlorine in the chlorite ion, ClO2-?
-7
+7
0
+1
Determine the formal charge on central atom in the ICl4 molecule.
-1
-2
What is the molecular geometry of BrF3?
T-shaped
Trigonal planar
Consider the given lewis structure of PF5. What is the geometry of this molecule?
octahedral
trigonal pyranidal
Determine the total number of valence electrons in bromide pentafluoride, BrF5.
42
48
50
What is the molecular shape of BF3?
Among the four Alkali metal Iodides LiI, NaI, KI, and RbI, which iodide has the highest lattice energy?
LiI
NaI
KI
RbI
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