객관식
What is the correct chemical name for the compound NH4SCN?
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객관식
Which of the following is the correct chemical formula for table salt?
A
Na2SO4
B
NaCl
C
KCl
D
CaCl2
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검증된 단계별 안내1
Understand that table salt is the common name for sodium chloride, which is composed of sodium (Na) and chlorine (Cl) ions.
Recall that sodium typically forms a +1 charge (Na⁺) and chloride forms a -1 charge (Cl⁻), so they combine in a 1:1 ratio to form a neutral compound.
Write the chemical formula by combining one sodium ion and one chloride ion, resulting in NaCl.
Compare the given options to identify which formula matches sodium chloride: Na2SO4 (sodium sulfate), NaCl (sodium chloride), KCl (potassium chloride), and CaCl2 (calcium chloride).
Conclude that the correct chemical formula for table salt is NaCl.
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