WorksheetsOptional Reivew for Test: Periodic Trends and Bonding
Total questions: 64
Worksheet time: 2hrs 18mins
Which is the correct structure for NH3?
Pictures correspond with a-d.
Option A.
Option B.
Option C.
Option D.
In a Lewis structure of a polyatomic ion, what do you do with the total number of valence electrons if your ion has a -2 charge (such as the carbonate ion)?
Add 2 to the valence number
Subtract 2 from the valence number
Multiply the valence number by 2
Divide the valence number by 2
Which of the following is the correct Lewis Dot Diagram for Hydrogen Cyanide, HCN?
A
B
C
D
Which is the correct molecular structure for carbon dioxide CO2?
Covalent bonds are formed between...
two or more metal atoms
two or more non-metal atoms
a metal and a non-metal atom
Oxygen is a diatomic molecule. Oxygen is in Group 6. How many electrons are shared in this covalent bond?
(a)
What is a valence electron?
electron found in a middle shell
electron found in outermost shell
electron found in innermost shell
electron not found in a shell
As you move down a group, atomic radius increases because ____.
you add more and more neutrons
you add more and more protons
you add more and more shells (energy levels)
you add more atomic mass
The atom with the largest atomic radius in Group 18 is ___.
Ar
He
Kr
Rn
the number of protons increases, so attraction to electrons increases
the number of energy levels increases
the number of electrons decreases
the atomic mass increases
The atom with the largest atomic radius in Period 4 (row 4) is ____.
K
Kr
Fe
Fe
the ability of an atom to attract/ accept electrons
the ability of an atom to lose electrons
the energy required to remove an electron from a specific atom
how easy it is to make friends.
Electronegativity __________ from left to right across a period and __________ from top to bottom down a group.
decreases, increases
increases, increases
increases, decreases
stays the same, increases
Which of the following will have a larger atomic radius than zinc?
Gallium
Aluminum
Magnesium
Strontium
Ionization energy is defined as ____.
the energy required to add an electron to a specific atom
how much energy it takes to remove an electron from an atom
the energy required to shield the outer electrons from the nucleus
a measure of the ability of an atom to attract electrons
Francium (Fr) has the lowest ionization energy in Group 1 because ____.
it has the smallest number of valence electrons
it has the greatest atomic mass
it has the greatest number of protons, so it attracts its electrons the strongest
its 1 valence electron is very far from the nucleus, so little energy is needed to remove it
Atomic radius is defined as ____.
the relative size of the atom's nucleus
the relative size of the atom's electron cloud
the energy required to shield the outer electrons from the nucleus
a measure of the ability of an atom to attract electrons
Which of the following will have a lower ionization energy than scandium (Sc)?
Helium (He)
Titanium (Ti)
Calcium (Ca)
Magnesium (Mg)
List the following elements in order of INCREASING atomic radius:
Cs, S, Co
They are all about the same
Co, Cs, S
S, Co, Cs
Cs, Co, S
Put the following chemical species in order of INCREASING radius:
F-1, Kr, K+1, N-3 (throwing out this question)
choose this answer...
don't choose this one
How many valence electrons in this group?
1
2
3
4
How many valence electrons in Iodine?
35
3
5
7
Between B, C, N, F, which is most electronegative?
B
C
N
F
What is the smallest atom on the periodic table?
H
He
Li
Ne
Which of the following halogens has the greatest electronegativity?
Chlorine (Cl)
Bromine (Br)
Iodine (I)
Astatine (At)
A horizontal row of elements is called:
(Select all that apply)
Family
Energy level
Group
Period
What could be a possible reason for its reaction with water?
Element W would have how many valence electrons?
5
6
7
8
What is the formal charge on oxygen for the hydronium ion H3O+?
+3
+1
-2
-3
0
What is the formal charge on the oxygen at the the bottom left in this Lewis dot structure?
0
+1
-1
-2
What is the picture showing?
All of the resonance structures for carbonate.
The formal charge on each atom in carbonate.
The electronegativity for carbonate.
The ionization energy for carbonate.
What is the formal charge on the bromine atom in this Lewis dot structure?
-1
+1
-2
+2
Draw the best electron dot structure for PCl3. How many pairs of non-bonded (lone pair) electrons are there on P?
Zero
One
Two
Three
Choose the electron dot diagram that correctly shows the bonding in methane CH4.
A
B
C
D
Are A and B resonance structures of each other?
Yes
No
Cannot be determined from the information given
The formal charge on carbon in the molecule shown is _______.
0
+1
+2
+3
-1
In the resonance form of ozone shown, the formal charge on the central oxygen atom is _______.
0
+1
-1
+2
-2
Which two elements are most likely to form a covalent bond?
C and Ca
P and F
Sr an S
Li and Cl
Al and I
Which of the following compounds contains BOTH ionic and covalent bonds?
NaCl
Li2CO3
CO2
MnO2
HCN
Choose the electron dot diagram that correctly shows the bonding in H2N2:
A
B
C
D
E
How many resonance structures can be drawn for NOCl?
0
1
2
3
What is the total number of valence electrons in the Lewis structure of the
NO2-1 polyatomic ion?
8
18
24
CHCl3 has how many double bonds?
0
1
2
3
