Chapter 6 Chem
What are the O-P-O bond angles in PO43-?
109.5 degrees
What are the approximate I-N-I bond angles in NI3?
109.5 degrees
What is the angle between electron groups in the linear electron geometry?
180 Degrees
What are the approximate F-Br-F bond angles in BrF5?
90 and 180 Degrees
Use VSEPR theory to predict the electron-pair geometry and the molecular geometry of phosphorus tribromide, PBr3.
???
What are the approximate F-Br-F bond angles in BrF5?
???
Which of the following molecules or ions does not have one or more resonance structures?
H2CO
Choose the molecule with the most electronegative central atom.
H2O
Which of the following elements is able to form a molecular structure that exceeds the octet rule?
I
The correct Lewis structure for BF3 would have exactly:
No Double Bond
Which of the following molecules or ions will have a Lewis structure most like that of the chlorate ion, ClO3-?
NI3
When both of the electrons in a molecular bond originate from the same atom, the bond is called a(n)
coordinate covalent bond.
The elements with the highest electronegativity values tend to be found in the:
upper right-side of the periodic table
Which of the following statement about Lewis structures is FALSE?
All of the above statements are false
Which molecule listed below is a polar molecule?
All of the compounds
Which of the following statements are TRUE about the BF3 molecule?
All of the statements are true
Which of the following molecules or ions are likely to be free radicals: N2O, OCL-, and ClO2?
CIO2 only
Which of the following statements is TRUE for the covalent molecule HCl?
Chlorine is more electronegative and the shared electron pair is likely to be found on the chlorine atom
It is important to identify lone pairs around a central atom because they do not repel other electron groups.
False
The Lewis structure of diatomic oxygen should have 8 valence electrons.
False
The ammonium ion contains 10 valence electrons.
False
When you have 4 electron groups and 1 of them is a lone pair, the molecular geometry is bent.
False
What is the molecular geometry of carbon dioxide, CO2?
Linear
Choose the molecule with the most electronegative central atom.
PH3
What is the electron pair geometry if you have 3 electron groups around the center atom?
Trigonal Planar
What is the molecular geometry of PH3?
Trigonal Pyrimidal
Boron forms compounds that violate the octet rule.
True
Resonance structures are the best representation we can draw but do not accurately reflect the true structure.
True
The Lewis structure of water has two sets of lone pair electrons.
True
The double bond is shorter and stronger than a single bond.
True
The central atom in SCl2 is surrounded by
Two single bonds and two lone pairs of electrons
What is the correct Lewis structure for CN-?
[:C---N:]-
The central atom in PF5 is surrounded by
five single bonds and no lone pairs of electrons.
Which one of the following molecules is polar?
sf4
Electronegativity is a measure of
the ability of an atom in a molecule to attract electrons to itself.
