Multiple Choice
The reactivity of an atom arises primarily from:
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2. Atoms & Elements
The Atom
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Join thousands of students who trust us to help them ace their exams!Watch the first videoMultiple Choice
The behavior of an atom depends primarily on the __________.
A
total number of neutrons
B
number of protons in its nucleus
C
number of electrons in its outermost shell
D
mass number
Verified step by step guidance1
Understand that the behavior of an atom, especially its chemical properties and how it interacts with other atoms, is determined by the electrons involved in bonding and reactions.
Recall that the total number of neutrons affects the isotope of the element but does not directly influence chemical behavior.
Recognize that the number of protons defines the element itself (its atomic number) but does not alone determine chemical behavior.
Focus on the number of electrons in the outermost shell (valence electrons), as these electrons participate in chemical bonding and reactions.
Conclude that the chemical behavior of an atom depends primarily on the number of electrons in its outermost shell.
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