EDM Chem A Unit 2 Review

Which atom or ion has the largest radius?

• K

• K+

• Ca

• Ca2+

The elements beryllium, calcium, and strontium are all in group 2. What is the correct relationship of these elements regarding their ionization energy?

• Ca < Be < Sr

• Sr < Be < Ca

• Be < Ca < Sr

• Sr < Ca < Be

Which of the following is the correct electron configuration for Sodium (11 electrons)?

• 1s2 2s2 2p6 3s2

• 1s2 2s2 2p6 3s1

• [Ne] 3s1

• Both B & C are correct

A student has a piece of aluminum metal. Which is the most reasonable assumption the student could make about the metal?

• It would only conduct electricity if it were melted.

• It could melt and boil if thrown into a campfire.

• It could be stretched into a thin wire.

• It will always have the exact same shape.

Which two properties are characteristic of ionic compounds?

• low melting and boiling point

• malleable and ductile

• Brittle and high melting point

Which of the following is the correct formula for Sodium Chloride

• NaCl

• Na2Cl

• NaCl2

• SCh

What is the chemical formula of trisilicon tetranitride?

• Si₃N₄

• Si₄N₃

• Si₃N₆

• Si₄N₆

Which property is typical of a covalent compound?

• They are extremely hard solids.

• They have low melting and boiling points.

• They conduct electricity.

• They exist only as gases and liquids.

What is the chemical name of the compound KCN? Use the list of polyatomic ions and the periodic table to help you answer.

• potassium carbon nitrate

• potassium monocarbon mononitride

• potassium cyanate

• potassium cyanide

The oxidation number of oxygen is -2. Use this information to select the correct name for the compound FeO

• Iron Oxide

• Iron (I) Oxide

• Iron (II) Oxide

• moniron monoxide