Who Is Lewis?
Draw the Lewis structure for H₂S.
Two single bonds between S and H, 4 lone pairs on S
The prefix for “two.”
What is di–?
The bond in F₂ is classified as this type.
What is nonpolar covalent?
Electronegativity measures an atom’s ability to do this.
What is attract electrons to itself?
Name NO₂.
nitrogen dioxide
Draw the Lewis structure for CH₂Br₂.
C in center, 2 H and 2 Br bonded, all octets complete
The prefix for “seven.”
What is hepta–?
The bonds in Ba metal are this type.
What is metallic?
A bond with a ΔEN of 0 is called this.
What is a pure covalent bond?
You never use this prefix on the first element.
What is mono–?
Draw the Lewis structure for HCN and include any multiple bonds needed.
H–C≡N with one lone pair on N
If a prefix ends in “a” and the next word starts with a vowel, this happens.
What is drop the “a”?
The C–O bonds in CO₂ are this type.
What is polar covalent?
A ΔEN of 0.8 represents this bond type.
What is a polar covalent bond?
Give the formula for diphosphorus pentoxide.
What is P₂O₅?
Draw the Lewis structure for SO₃ and show resonance.
See Elena
The prefixes for 9 and 10.
What are nona– and deca–?
Given these electronegativity values:
H = 2.1, Cl = 3.0, Mg = 1.2, O = 3.5.
Classify the following bonds as nonpolar covalent, polar covalent, or ionic:
a) H–Cl
b) Mg–O
c) O–Cl
a. ΔEN = 0.9 → Polar covalent
b. ΔEN = 2.3 → Ionic
c. ΔEN = 0.5 → Polar covalent
Arrange in increasing electronegativity:0, F, C
What is C < O < F?
Name I₂F₇.
diiodine heptafluoride?
Draw the Lewis structure for SO₃ and show resonance.Draw the Lewis dot structure for PO4 ^-3 and include formal charges for all atoms.
S in center, three double bonds to O, or resonance with one double and two single bonds + formal charges.
Name this compound: S₂Cl₂
What is disulfur dichloride?
Use δ notation to show which atom is more electronegative in C–Cl.
What is δ⁺C–Clδ⁻?
Explain the dipole arrow in an H–O bond.
What is it points toward O, the more electronegative atom?
Name SF₄.
What is sulfur tetrafluoride?