Covalent Bonding
This type of bond forms when atoms share electrons.
covalent bond
These diagrams show valence electrons as dots.
lewis dot diagrams
– Prefix meaning “one” (often omitted for the first element).
What is mono?
This term describes an atom’s ability to attract electrons.
What is electronegativity?
A molecule with an uneven charge distribution is called this.
polar molecule?
Covalent bonds usually form between these two types of elements.
two nonmetals
The number of dots in a Lewis diagram equals this.
– What are valence electrons?
Prefix meaning “three.”
What is tri?
The greater the electronegativity difference, the more ______ the bond.
What is polar?
Even if bonds are polar, this can make a molecule nonpolar.
molecular symmetry
A single covalent bond involves this many shared electrons.
What are two electrons
$300 – This rule states atoms want 8 valence electrons (with exceptions).
What is the octet rule?
The second element in a covalent compound usually ends with this suffix.
-ide?
A bond with equal sharing of electrons is called this.
What is a nonpolar covalent bond?
Is H₂O polar or nonpolar?
polar
This type of covalent bond shares two pairs of electrons.
What is a double bond
In Lewis structures, shared electron pairs are shown as this.
– What are lines (or dashes)?
Name the compound: CO₂.
carbon dioxide?
Which element is more electronegative: oxygen or sulfur?
What is oxygen?
– This molecular shape often leads to nonpolar molecules.
linear (or symmetrical)
A covalent bond where electrons are shared unequally
What is a polar covalent bond?
The element that usually goes in the center of a Lewis structure.
What is carbon?
Name the compound: N₂O₅.
dinitrogen pentoxide?
This symbol is used to show partial charges in a polar bond.
What is δ⁺ and δ⁻ (partial charges)?
CO₂ has polar bonds but is nonpolar because of this.
its linear, symmetrical shape