Multiple Choice
Which element has atoms that contain exactly 11 protons?
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2. Atoms & Elements
The Atom
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In the context of atomic structure, how many different kinds of protons are present in a molecule of H2O?
A
1
B
0
C
2
D
3
Verified step by step guidance1
Understand that in atomic structure, a proton is a subatomic particle found in the nucleus of an atom and is characterized by its positive charge and identity as a hydrogen nucleus.
Recognize that the question asks about the number of different kinds of protons in a molecule of H2O, which consists of two hydrogen atoms and one oxygen atom.
Recall that all protons are identical in terms of their fundamental properties; the difference in atoms comes from the number of protons, neutrons, and electrons, not from different types of protons.
Since the hydrogen atoms in H2O each contain one proton and these protons are identical, there is only one kind of proton present in the molecule.
Therefore, the number of different kinds of protons in a molecule of H2O is 1.
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