Multiple Choice
Which term describes the group of protons and neutrons located at the center of all atoms?
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2. Atoms & Elements
The Atom
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Which of the following best describes the molecule represented as O2?
A
A molecule consisting of one oxygen atom and two hydrogen atoms
B
A diatomic molecule consisting of two oxygen atoms
C
A molecule consisting of two oxygen atoms and two hydrogen atoms
D
A triatomic molecule consisting of three oxygen atoms
Verified step by step guidance1
Identify the chemical formula given: O2.
Recall that the subscript number in a chemical formula indicates the number of atoms of that element in the molecule. Here, the subscript '2' means there are two oxygen atoms.
Understand that O2 represents a molecule made up of two oxygen atoms bonded together, which is called a diatomic molecule.
Compare the options: the correct description should mention two oxygen atoms and no other elements.
Conclude that the best description is 'A diatomic molecule consisting of two oxygen atoms.'
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