The Periodic Table

Open Ended

Why is the periodic table considered an important tool in chemistry?

Multiple Choice

What do all elements in the same period of the periodic table have in common?

• They have the same number of protons

• They have the same number of energy levels

• They have similar chemical properties

• They have the same atomic mass

Multiple Choice

What is the main characteristic that members of the same group (family) in the periodic table share?

• They have the same number of valence electrons.

• They have the same atomic number.

• They are all metals.

• They are all gases.

Multiple Choice

Which of the following statements about alkali metals is correct?

• They are the most active metals and have one valence electron.

• They are the least active metals and have two valence electrons.

• They form -1 ions when bonding.

• They gain electrons to form bonds.

Fill in the Blanks

Alkaline earth metals form ions with a charge of

when they lose both of their valence electrons.

Multiple Select

Select all correct statements about the halogen group.

• They are found in Family 17 of the periodic table.

• They are metals.

• They are highly reactive nonmetals.

• They have seven valence electrons.

Multiple Choice

Which family of elements is known as the most active nonmetals and forms salts when reacting with metals?

• Halogens

• Noble gases

• Transition metals

• Alkali metals

Multiple Choice

Which of the following statements about noble gases is correct?

• They have 8 valence electrons and do not normally form compounds.

• They are highly reactive and form many compounds.

• They have 7 valence electrons and gain 1 electron to form an octet.

• They are found in Family 17 of the periodic table.

Multiple Select

Select all correct statements about transition metals.

• They have one or two valence electrons.

• They are less active than alkali metals.

• They always have a charge of -1.

• They do not obtain octets because of 'd' electrons.

Multiple Choice

Transition metals are found in which families of the periodic table?

• Family 3 – Family 12

• Family 13 – Family 18

• Family 1 – Family 2

• Family 17 – Family 18

Fill in the Blanks

The stair step line on the periodic table divides

and nonmetals.

Multiple Select

Which of the following elements are classified as metalloids?

• Boron (B)

• Silicon (Si)

• Oxygen (O)

• Arsenic (As)

Multiple Choice

Which of the following statements best describes metalloids?

• They have properties of both metals and nonmetals.

• They are only good conductors of electricity.

• They are only found on the left side of the periodic table.

• They are all gases at room temperature.

Fill in the Blanks

Dmitri Mendeleev is known as the father of the

table.

Multiple Choice

What was the main criterion used by John Newlands to arrange the elements in his periodic table?

• Increasing atomic mass

• Increasing atomic number

• Decreasing atomic mass

• Alphabetical order

Fill in the Blanks

Mendeleev predicted the properties of elements such as

, gallium, and germanium.

Multiple Choice

Who proposed that the periodic table should be arranged in order of increasing atomic number?

• Dmitri Mendeleev

• Henry Moseley

• John Dalton

• Marie Curie

Multiple Select

Which of the following statements about the periodic law are correct?

• The properties of elements repeat periodically when arranged by atomic number.

• The periodic table is arranged by increasing atomic mass.

• Element properties are related to their atomic numbers.

• Repetition of properties can be seen in both families and groups.

Multiple Choice

Based on the diagram, which element has the largest atomic radius?

• Helium

• Francium

• Oxygen

• Sodium

Fill in the Blanks

The smallest atomic radius among the elements is found in

.

Open Ended

Explain why metals tend to have lower ionization energies compared to nonmetals.

Multiple Choice

What does electronegativity indicate about an atom?

• Its ability to lose electrons

• Its ability to attract electrons in a chemical bond

• Its atomic mass

• Its number of protons

Open Ended

What is the significance of periods in the periodic table?