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Which of the following is the correct chemical formula for aluminum sulfide?
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3. Chemical Reactions
Naming Ionic Compounds
Scelta multipla
Which of the following best represents the formula unit for an ionic compound formed between fluorine and hydrogen?
A
H2F
B
H2F2
C
HF
D
No ionic compound is formed because hydrogen and fluorine form a covalent compound
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Identify the types of elements involved: hydrogen (H) is a nonmetal and fluorine (F) is a nonmetal as well.
Recall that ionic compounds typically form between metals and nonmetals, where electrons are transferred to form ions.
Since both hydrogen and fluorine are nonmetals, they tend to share electrons rather than transfer them, resulting in a covalent bond.
Recognize that the compound formed between hydrogen and fluorine is hydrogen fluoride (HF), which is a covalent molecule, not an ionic compound.
Therefore, the formula unit for an ionic compound does not apply here because the bond is covalent, not ionic.
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