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.