CH 10 LEWIS DOT
What is the angle between electron groups in the tetrahedral geometry?
109.5°
What is the angle between electron groups in the linear electron geometry?
180°
How many valence electrons are in the nitrate ion?
24
The Lewis structure of oxygen should have 8 valence electrons. (TRUE/FALSE)
FALSE
The VSEPR theory predicts that the H-C-H angle in CH4 measures 120°. (TRUE/FALSE)
FALSE
The sulfate ion contains 28 valence electrons. (TRUE/FALSE)
FALSE
When calculating the number of electrons for the Lewis structure of a polyatomic ion, subtract one electron for each negative charge. (TRUE/FALSE)
FALSE
Bonding theories are used to predict how atoms bond together to form molecules. (TRUE/FALSE)
TRUE
Having eight valence electrons is very stable and is called an octet. (TRUE/FALSE)
TRUE
Resonance structures are the best representation we can draw but do not accurately reflect the true structure. (TRUE/FALSE)
TRUE
The double bond is shorter and stronger than a single bond. (TRUE/FALSE)
TRUE
What is the molecular geometry of SCl2?
bent
What is the molecular geometry of ozone, O3?
bent
The central atom in the chlorate anion, ClO3- is surrounded by:
three bonding and one lone pair of electrons.
What is the electron geometry if you have 3 electron groups around the center atom?
trigonal planar
What is the molecular geometry if you have 3 single bonds and 1 lone pair around the central atom?
trigonal pyramidal
When a molecule has four electron groups with one of them lone pairs, the molecular geometry will be:
trigonal pyramidal
The elements with the highest electronegativity values tend to be found in the:
upper right-side of the periodic table.
