Valence Electrons and Lewis Dot Structure
Flashcard
•
Science
•
8th - 9th Grade
•
Practice Problem
•
Hard
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15 questions
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1.
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.
2.
FLASHCARD QUESTION
Front
How many valence electrons does Sodium (Na) have?
Back
Sodium (Na) has 1 valence electron.
3.
FLASHCARD QUESTION
Front
What is the significance of having 8 valence electrons?
Back
Having 8 valence electrons (octet) makes an atom more stable and less reactive.
4.
FLASHCARD QUESTION
Front
What happens to an atom when it gains an electron?
Back
When an atom gains an electron, it becomes negatively charged (anion).
5.
FLASHCARD QUESTION
Front
What happens to an atom when it loses an electron?
Back
When an atom loses an electron, it becomes positively charged (cation).
6.
FLASHCARD QUESTION
Front
How many valence electrons does Chlorine (Cl) have?
Back
Chlorine (Cl) has 7 valence electrons.
7.
FLASHCARD QUESTION
Front
What is a Lewis Dot Structure?
Back
A Lewis Dot Structure is a diagram that shows the bonding between atoms of a molecule and the lone pairs of electrons that may exist.
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