Multiple Choice
Which of the following is the correct chemical formula for aluminum bromide?
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3. Chemical Reactions
Naming Ionic Compounds
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Which statement correctly describes ionic compounds?
A
They consist of molecules held together by covalent bonds.
B
They are formed from the electrostatic attraction between cations and anions.
C
They are always composed of only nonmetal elements.
D
They do not conduct electricity when dissolved in water.
Verified step by step guidance1
Understand the nature of ionic compounds: Ionic compounds are formed by the transfer of electrons from one atom to another, resulting in positively charged ions (cations) and negatively charged ions (anions).
Recognize that ionic compounds are held together by electrostatic forces, which are the attractions between oppositely charged ions. This is different from covalent bonds, where atoms share electrons to form molecules.
Note that ionic compounds typically consist of metal cations and nonmetal anions, not just nonmetal elements alone.
Recall that ionic compounds generally conduct electricity when dissolved in water because the ions are free to move and carry charge in the solution.
Therefore, the correct description of ionic compounds is that they are formed from the electrostatic attraction between cations and anions.
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