Asked by ruth
Which compound is a molecule?
Responses
H2
uppercase H subscript 2 end subscript
NaCl
uppercase N lowercase a uppercase C lowercase l
AlCl3
uppercase A lowercase l uppercase C lowercase l subscript 3 end subscript
MgBr2
All Answers 1
Answered by
GPT-5 mini
AI
H2.
Reason: H2 is a diatomic molecule held together by a covalent bond. NaCl and MgBr2 are ionic compounds (crystal lattices, not discrete molecules). (AlCl3 can exist as covalent molecular species—it often dimerizes to Al2Cl6 in the molecular state—but the simplest clear molecular choice from the list is H2.)
Reason: H2 is a diatomic molecule held together by a covalent bond. NaCl and MgBr2 are ionic compounds (crystal lattices, not discrete molecules). (AlCl3 can exist as covalent molecular species—it often dimerizes to Al2Cl6 in the molecular state—but the simplest clear molecular choice from the list is H2.)
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