WorksheetsChemical Properties of Representative Elements
Total questions: 70
Worksheet time: 35mins
For representative elements in the periodic table, what determines their chemical properties?
Their atomic mass
The number of protons
The number of valence electrons
The period number
Where are valence electrons located in an atom?
In the nucleus
In the innermost energy level
In the outermost energy level
In the d-orbitals
What does the group number of representative elements indicate?
The number of protons
The number of neutrons
The number of electron shells
The number of valence electrons
How many valence electrons does an element in Group 2A (2) have?
1
2
3
4
Which group number corresponds to elements with 6 valence electrons?
4A (14)
5A (15)
6A (16)
7A (17)
What is the number of valence electrons for elements in Group 1A (1)?
1
2
3
4
Elements in which group have 7 valence electrons?
5A (15)
6A (16)
7A (17)
8A (18)
How many valence electrons are present in elements of Group 3A (13)?
2
3
4
5
Electron-dot symbols are also known as what?
Bohr models
Lewis structures
Dalton diagrams
Rutherford schematics
What do electron-dot symbols represent?
The total number of electrons in an atom
The atomic number of an element
The valence electrons as dots placed on the sides of a symbol
The number of protons in the nucleus
How many valence electrons does aluminum (Al) have according to the electron-dot symbol provided?
2
8
3
13
How many valence electrons does an atom of silicon (Si) have according to the electron-dot symbol?
3
4
5
6
Which of the following elements has an electron-dot symbol with six valence electrons?
Carbon (C)
Oxygen (O)
Sodium (Na)
Aluminum (Al)
According to the table, which element is stable with two valence electrons?
Hydrogen (H)
Helium (He)
Lithium (Li)
Beryllium (Be)
What do atoms form when they lose electrons?
Negatively charged ions
Positively charged ions
Covalent bonds
Molecules
What are ionic bonds formed by?
The sharing of electrons between atoms
The strong repulsive forces between positive and negative ions
The strong attractive forces between positive and negative ions
The transfer of protons between atoms
According to the octet rule, how many valence electrons do atoms aim to acquire through chemical bonding?
Two valence electrons
Four valence electrons
Six valence electrons
Eight valence electrons
Covalent bonds occur between which types of atoms?
Metal and nonmetal atoms
Nonmetal atoms
Metal atoms
Noble gas atoms
What type of bond is formed when there is a transfer of electrons from one atom to another?
Covalent bond
Hydrogen bond
Ionic bond
Metallic bond
What type of bond is formed when atoms share electrons?
Ionic bond
Covalent bond
Metallic bond
Hydrogen bond
According to the diagram, what is the charge of the metal ion after it has transferred its electrons to the nonmetal?
Negative
Neutral
Positive
No charge
Based on the diagram, what is the charge of the nonmetal ion after it has accepted electrons from the metal?
Positive
Neutral
Negative
No charge
Metals tend to lose electrons until they have the same number of valence electrons as which group of elements?
Alkali metals
Alkaline earth metals
Transition metals
Noble gases
How many protons does a neutral sodium atom have?
10
11
12
13
What is the ionic charge of a sodium ion after it loses one electron?
0
1+
2+
1-
After losing one electron, a sodium atom will have the same number of valence electrons as which noble gas?
Helium
Neon
Argon
Krypton
What is the correct electron-dot symbol for a sodium ion?
Na with one dot around it
Na+
Na with seven dots around it
Na with eight dots around it
How many electrons does a neutral magnesium atom have?
10
12
2
8
What is the ionic charge of a magnesium ion after it loses two electrons?
1+
2+
1-
2-
After losing two electrons, a magnesium ion has the same number of valence electrons as which noble gas?
Helium
Argon
Neon
Krypton
Nonmetals in which of the following groups have high ionization energies and readily gain electrons to form negative ions?
Group 5A
Group 3A
Group 6A
Group 2A
Group 1A
Nonmetals gain electrons until they have the same number of valence electrons as which of the following?
The nearest alkali metal
The nearest halogen
The nearest noble gas
The nearest transition metal
How many valence electrons do nonmetals typically aim to have when gaining electrons to form ions?
Two valence electrons
Four valence electrons
Six valence electrons
Eight valence electrons
Chlorine atoms in Group 7A (17) are neutral because they have an equal number of which subatomic particles?
Electrons and neutrons
Protons and neutrons
Electrons and protons
Neutrons and ions
What happens when chlorine atoms gain one electron?
They become positively charged ions.
They have the same number of valence electrons as helium and a filled energy level.
They form an ion with 18 electrons and 17 protons, and an ionic charge of 1+.
They have the same number of valence electrons as argon and a filled energy level.
What is the ionic charge of a chlorine ion after it gains one electron?
1+
2-
1-
0
How many protons and electrons does a chlorine ion have after gaining one electron?
17 protons and 17 electrons
18 protons and 17 electrons
17 protons and 18 electrons
18 protons and 18 electrons
What is the electron arrangement in a chlorine ion after it gains one electron?
2,8,7
2,8,8
2,7,8
2,8,6
What is the formula for the cation of Potassium?
Na+
K+
Mg2+
Ca2+
Which anion is represented by the formula S2-?
Oxide
Sulfide
Nitride
Phosphide
What is the name of the anion with the formula F-?
Fluoride
Chloride
Bromide
Iodide
Which of the following is the correct formula and name pairing for a metal cation?
1A (1) - Lithium - Li+
6A (16) - Oxygen - O2-
7A (17) - Fluorine - F-
3A (13) - Aluminum - Al3+
What is the group number for the cation of Sodium?
1A (1)
2A (2)
3A (13)
5A (15)
Which anion belongs to group 5A (15)?
Nitride
Phosphide
Oxide
Sulfide
Which ion is most likely to form from an element in Group 1A (1)?
N^3-
Li^+
Cl^-
Mg^2+
What is the charge on an ion typically formed by an element in Group 2A (2)?
1+
2+
3+
1-
Which of the following ions has a -3 charge?
K+
Ba2+
N3-
F-
What is the charge of the ion formed by an element in Group 7A (17)?
1+
2+
3+
1-
Which noble gas is nearest to the ion Rb^+?
He
Ne
Ar
Kr
What do ionic compounds consist of?
Only positive ions
Only negative ions
Both positive and negative ions
Neither positive nor negative ions
What type of bonds do ionic compounds have?
Covalent bonds
Metallic bonds
Ionic bonds
Hydrogen bonds
What is the state of ionic compounds at room temperature?
Gas
Liquid
Solid
Plasma
What is a characteristic property of ionic compounds regarding their melting points?
They have low melting points
They have moderate melting points
They have high melting points
They do not have a definite melting point
What does the chemical formula of an ionic compound represent?
The physical state of the compound
The color of the compound
The symbols and subscripts in the lowest whole-number ratio of the atoms or ions
The temperature at which the compound melts
What must be true about the sum of ion charges in an ionic compound?
The sum of ion charges must equal the number of atoms in the compound
The sum of ion charges must be greater than zero
The sum of ion charges must equal zero
The sum of ion charges must be a multiple of two
What is meant by charge balance in the context of ionic compounds?
The total positive charge is less than the total negative charge
The total positive charge is greater than the total negative charge
The total positive charge is equal to the total negative charge
The total positive charge and total negative charge are both zero
What happens to sodium (Na) and chlorine (Cl) atoms when they form an ionic compound?
Sodium gains an electron and chlorine loses an electron.
Sodium and chlorine both lose an electron.
Sodium loses an electron and chlorine gains an electron.
Sodium and chlorine both gain an electron.
What is the charge of the sodium ion (Na+) after it loses an electron?
0
+1
-1
+2
What is the charge of the chloride ion (Cl-) after it gains an electron?
0
+1
-1
+2
What is the formula for the ionic compound formed by sodium (Na) and chlorine (Cl)?
NaCl
Na2Cl
NaCl2
Na2Cl2
What is the common name for the compound NaCl?
Baking soda
Sodium bicarbonate
Sodium chloride
Chlorine gas
What is the formula of sodium chloride when sodium (Na) loses 1 electron and chlorine (Cl) gains 1 electron?
NaCl
MgCl2
Na2Cl
MgCl
What is the charge on magnesium ion (Mg) when it loses 2 electrons?
1+
2+
1-
2-
How many chloride ions (Cl-) will bond with one magnesium ion (Mg2+) to form magnesium chloride?
One
Two
Three
Four
What is the correct formula for magnesium chloride?
MgCl
Mg2Cl
MgCl2
Mg2Cl2
When writing the formula for an ionic compound, what should be written first?
The symbol of the nonmetal and its charge
The magnitude of the charge on each ion as the subscript for the other ion
The symbol for the metal and its charge
The reduced subscripts to give a ratio with the smallest whole numbers
What is the next step after writing the symbol for the metal and its charge in the formula of an ionic compound?
Write the symbol of the nonmetal and its charge
Check to make sure that the sum of the charges of the cations exactly cancels the sum of the charges of the anions
Reduce the subscripts to give a ratio with the smallest whole numbers
Write the magnitude of the charge on each ion as the subscript for the other ion
How should the magnitude of the charge on each ion be used when writing the formula of an ionic compound?
It should be written as the charge for the metal ion
It should be written as the charge for the nonmetal ion
It should become the subscript for the other ion
It should be ignored as it is not relevant
What must be done to the subscripts in an ionic compound formula?
They should be increased to the highest possible whole numbers
They should be left as they are, regardless of their size
They should be reduced to give a ratio with the smallest whole numbers
They should be written in Roman numerals
When finalizing the formula for an ionic compound, what should you check?
That the sum of the charges of the cations exactly cancels the sum of the charges of the anions
That the charges of the cations are greater than the charges of the anions
That the charges of the anions are greater than the charges of the cations
That the charges of the cations and anions are equal to zero
