Lewis structures and atoms
Flashcard
•
Science
•
9th - 12th Grade
•
Practice Problem
•
Hard
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1.
FLASHCARD QUESTION
Front
What does each line in a Lewis structure represent?
Back
Each line represents 2 shared electrons between atoms.
2.
FLASHCARD QUESTION
Front
According to the octet rule, how many valence electrons do most elements need?
Back
Most elements need 8 valence electrons.
3.
FLASHCARD QUESTION
Front
What is the Lewis structure for water (H2O)?
Back
The correct Lewis structure shows the oxygen atom in the center with two hydrogen atoms bonded to it, and two lone pairs of electrons on the oxygen.
4.
FLASHCARD QUESTION
Front
What is the correct Lewis structure for BF3?
Back
The correct Lewis structure has boron in the center with three fluorine atoms bonded to it, and no lone pairs on boron.
5.
FLASHCARD QUESTION
Front
What is the Lewis Dot Structure for ammonia (NH3)?
Back
The Lewis Dot Structure shows nitrogen in the center with three hydrogen atoms bonded to it and one lone pair of electrons on nitrogen.
6.
FLASHCARD QUESTION
Front
What is a Lewis structure?
Back
A Lewis structure is a diagram that shows the bonding between atoms and the lone pairs of electrons in a molecule.
7.
FLASHCARD QUESTION
Front
What is the octet rule?
Back
The octet rule states that atoms tend to bond in such a way that they have eight electrons in their valence shell, achieving a stable electron configuration.
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