Multiple Choice
How many valence electrons does an atom of aluminum (Al) possess?
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10. Periodic Properties of the Elements
Valence Electrons of Elements
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Join thousands of students who trust us to help them ace their exams!Watch the first videoMultiple Choice
Why are valence electrons important in chemistry?
A
They define the atomic number of an element.
B
They determine how an atom interacts and bonds with other atoms.
C
They are found only in noble gases.
D
They are responsible for the color of an element.
Verified step by step guidance1
Understand that valence electrons are the electrons located in the outermost shell of an atom.
Recognize that these electrons are the ones involved in chemical reactions because they can be gained, lost, or shared when atoms form bonds.
Know that the number of valence electrons influences an atom's chemical properties and its ability to bond with other atoms.
Realize that the atomic number is defined by the total number of protons, not valence electrons, so valence electrons do not define the atomic number.
Conclude that valence electrons are important because they determine how an atom interacts and bonds with other atoms, which is fundamental to chemistry.
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