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Which of the following contains a coordinate covalent bond? (Hint: How many covalent bonds would you expect the central atom (underlined/bold) to form?) a. PbCl₂ b. Cu (NH₃)₄²⁺ c. NH⁺₄
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10. Chemical Bonding
Covalent Bonds
Scelta multipla
In general chemistry, what is the smallest unit of a covalent compound that retains the compound’s chemical identity?
A
A molecule
B
A nucleus
C
A formula unit
D
An ion
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Understand the question is asking for the smallest unit of a covalent compound that retains its chemical identity.
Recall that covalent compounds are formed by atoms sharing electrons, creating discrete units called molecules.
Recognize that a molecule is the smallest unit of a covalent compound that maintains the chemical properties of that compound.
Differentiate this from other options: a nucleus is part of an atom, a formula unit refers to ionic compounds, and an ion is a charged particle.
Conclude that the correct term for the smallest unit of a covalent compound is a molecule.
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