Ions and Valence Electrons

Flashcard
•
Chemistry
•
12th Grade
•
Hard
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15 questions
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1.
FLASHCARD QUESTION
Front
What is an ion?
Back
An ion is an atom or molecule that has a net electrical charge due to the loss or gain of one or more electrons.
2.
FLASHCARD QUESTION
Front
What are valence electrons?
Back
Valence electrons are the electrons in the outermost shell of an atom that are involved in forming bonds with other atoms.
3.
FLASHCARD QUESTION
Front
What is the charge of a cation?
Back
A cation is a positively charged ion, formed when an atom loses one or more electrons.
4.
FLASHCARD QUESTION
Front
What is the charge of an anion?
Back
An anion is a negatively charged ion, formed when an atom gains one or more electrons.
5.
FLASHCARD QUESTION
Front
How many valence electrons do alkali metals have?
Back
Alkali metals have 1 valence electron.
6.
FLASHCARD QUESTION
Front
How many valence electrons do noble gases have?
Back
Noble gases have 8 valence electrons, except for helium, which has 2.
7.
FLASHCARD QUESTION
Front
What happens to the size of an atom when it becomes a cation?
Back
When an atom becomes a cation, it loses electrons and the size of the atom decreases.
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