Unit 2 Periodic Table Review

What can you infer about elements that are in the same group?

• They will have the same atomic mass.

• They contain the same number of protons.

• They will display similar chemical and physical properties.

• They will have the same atomic number.

How does the modern periodic table differ from the earlier table?

• It is arranged in order of increasing atomic mass

• It is arranged in order of increasing atomic number

• Elements with similar properties were placed in the same period

• They are exactly the same

Neon is an inert gas in group 18 that does not react with any other element. Which of the following elements is likely to have properties similar to those of neon?

• lithium (Li) in group 1

• boron (B) in group 13

• iron (Fe) in group 8

• krypton (Kr) in group 18

Alkali metals share all of the following properties EXCEPT -

• They are very reactive metals.

• They are soft solids that are shiny and malleable.

• They react vigorously with water.

• They have high melting points.

Which of the following chemical families will lose two electrons to form a +2 cation?

• alkali metals

• alkaline earth metals

• halogens

• noble gases

This is the only family on the periodic table to contain elements in all three states of matter -

• alkali metals

• alkaline earth metals

• transition metals

• halogens

What are the most reactive groups on the periodic table?

• Groups 1A and 2A

• Groups 1A and 7A

• Groups 7A and 8A

• Groups 3-12

What properties do the noble gases share?

• They gain one electron, forming -1 anions

• They are found in nature only within compounds

• They have high thermal and electric conductivity

• They are nonreactive due to having a full outer shell

Based on the atomic radii trend, which of these elements would have the largest atomic radius?

• Lithium (Li)

• Sodium (Na)

• Potassium (K)

• Rubidium (Rb)

Which of the following elements has the highest ionization energy?

• Hydrogen (H)

• Helium (He)

• Fluorine (F)

• Francium (Fr)