Multiple Choice
In simplified terms, the chemical behavior of an atom is primarily determined by the:
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9. Electrons in Atoms and the Periodic Table
Valence Electrons of Elements (Simplified)
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In a simplified model, what primarily determines the chemical properties (reactivity and bonding behavior) of an atom?
A
The number of electron shells regardless of valence electrons
B
The atom's mass number only
C
The number and arrangement of valence electrons in the outermost energy level
D
The total number of neutrons in the nucleus
Verified step by step guidance1
Understand that chemical properties of an atom are mainly influenced by how it interacts with other atoms, which depends on its electrons, especially those in the outermost shell.
Recall that electrons are arranged in energy levels or shells around the nucleus, and the outermost shell is called the valence shell.
Recognize that valence electrons are the electrons in the outermost energy level and are responsible for forming chemical bonds and determining reactivity.
Note that the number of electron shells alone does not determine chemical behavior; instead, it is the number and arrangement of valence electrons that matter.
Understand that the atom's mass number and the number of neutrons in the nucleus affect atomic mass and stability but do not directly influence chemical properties.
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