Chapter 6 Chemical Bonds

Which of the following groups contain three elements with stable electron configurations?

• potassium, neon, argon
• krypton, xenon, aluminum
• helium, neon, krypton
• hydrogen, fluorine, argon

Ionization energies tend to

• decrease from left to right across a period
• increase from top of a group to the bottom
• increase from left to right across a period
• decrease from the bottom of a group to the top

Tags

NGSS.HS-PS1-1

NGSS.HS-PS1-2

The formation of an ionic bond involves the 

• transfer of electrons 
• transfer of protons
• transfer of neutrons
• sharing of electrons

Which of the following statements correctly describes the substance with the formula NaBr?

• Molecules of potassium iodide contain one atom of potassium and one atom of iodine
• there is a one-to-one ratio of potassium ions to iodide ions. 
• potassium iodide is a molecular compound
• potassium iodide is a polyatomic ion 

Which statements best describes the properties of sodium chloride?

• sodium chloride is a malleable solid
• solid sodium chloride is a good conductor of electric current
• sodium chloride has a low melting point
• liquid sodium chloride is a good conductor of electric current. 

When two atoms of the same nonmetal react, they often form a(an)

• ionic bond
• polyatomic ion
• diatomic molecule
• polar molecule

Which of the following formulas represents a compound whose molecules contain a triple bond?

• N≡N
• O=O=O
• O₃
• SeO₃

In a polar covalent bond, 

• electrons are shared equally between atoms
• a cation is bonded to an anion
• electrons are transferred between atoms
• electrons are not shared equally between atoms

Because water molecules are polar and carbon dioxide molecules are nonpolar, 

• water has a lower boiling point that carbon dioxide does
• attractions between water molecules are weaker than attractions between carbon dioxide molecules
• carbon dioxide cannot exist as a solid
• water has a higher boiling point than carbon dioxide does

Bromine, Br, forms a binary compound with Potassium,K. What is the name of this compound?

• Bromine potaside
• potassium bromine
• potassium bromide
• bromine potassium