Multiple Choice
Which of the following elements has 7 valence electrons?
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10. Periodic Properties of the Elements
Valence Electrons of Elements
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Which part of the atom primarily determines how an element interacts in a chemical reaction?
A
Protons in the nucleus
B
Core (inner) electrons
C
Neutrons in the nucleus
D
Valence electrons
Verified step by step guidance1
Understand that chemical reactions involve the making and breaking of bonds between atoms.
Recall that electrons are arranged in shells around the nucleus, with the outermost shell called the valence shell.
Recognize that valence electrons are the electrons in the outermost shell and are the ones involved in forming chemical bonds.
Note that protons and neutrons are located in the nucleus and do not directly participate in chemical bonding.
Conclude that the valence electrons primarily determine how an element interacts in a chemical reaction because they are available to be shared, gained, or lost.
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