Multiple Choice
Which of the following is NOT a component of Dalton's Atomic Theory?
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4. Atoms and Elements
Atomic Theory
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Join thousands of students who trust us to help them ace their exams!Watch the first videoMultiple Choice
In atomic theory, all atoms of a given element have the same what?
A
Mass number
B
Number of protons (atomic number)
C
Number of neutrons
D
Number of electron shells
Verified step by step guidance1
Understand the question is asking about a fundamental property that is the same for all atoms of a given element.
Recall that an element is defined by its atomic number, which is the number of protons in the nucleus of its atoms.
Recognize that while the number of neutrons and electron shells can vary among atoms of the same element (isotopes and ions), the number of protons remains constant.
Therefore, the property that is the same for all atoms of a given element is the number of protons, also known as the atomic number.
Mass number, number of neutrons, and number of electron shells can differ, so they are not the defining characteristic for all atoms of an element.
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