Multiple Choice
In the simplified model of the atom, what makes up most of the volume of an atom?
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4. Atoms and Elements
The Atom (Simplified)
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Join thousands of students who trust us to help them ace their exams!Watch the first videoMultiple Choice
All atoms of a given element have the same what?
A
Total number of electrons present in all situations
B
Mass number
C
Number of neutrons in the nucleus
D
Number of protons in the nucleus (atomic number)
Verified step by step guidance1
Understand that an element is defined by a specific characteristic that is the same in all its atoms, regardless of the isotope or ion form.
Recall that the number of protons in the nucleus of an atom is called the atomic number, and this number uniquely identifies the element.
Recognize that while the number of neutrons and electrons can vary (leading to isotopes and ions), the number of protons remains constant for all atoms of a given element.
Therefore, the property that is the same for all atoms of a given element is the number of protons in the nucleus, also known as the atomic number.
This is why the atomic number is used to organize elements in the periodic table and distinguish one element from another.
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