Chemistry A Molecular Approach AP Edition Chapter 9

Lewis models

Lewis models

________ are limited because they make it seem like electrons are equally shared between two atoms.

transfer of an electron

The ________ causes energy to be absorbed.

Metals

________ become cations and nonmetals are anions.

best structures

The ________ will have the least electronegative atom in the middle.

Valence electrons

________ are represented with dots.

chemical bond

A(n) ________ is the sharing or transferring of an electron in order to reach a stable electron configuration.

Lattice energy

What is larger when the magnitude of the ionic charge increases? Answer with a single words or term.

Ionic bonds

________ deal with electrons being transferred.

Free radicals

________ can be expressed as Lewis structures because resonance shows the different places the electron could be located.

Hydrogen atoms

________ can never be in the center.

Dashes lines

________ represent a bonding pair.

Scientists

________ tried to develop a molecule that would disable the HIV- protease.

electronegative element

The more ________ should be in the center.

Lewis symbol of an anion

The ________ is represented with brackets around the model and the charge in the upper right corner.

Incomplete octets

________ are molecules or ions with less than 8 electrons.

enthalpy change

What is the lattice energy? Answer with a single words or term.

Francium

What is the least electronegative element? Answer with a single words or term.

Any lone pairs

________ should be given to the middle atom.

electron sea model models

Metals have low ionization energies, so they lose their electrons very easily. The ________ metallic bonding.

Fluorine

What is the most electronegative element? Answer with a single words or term.

Helium

What is an exception because it can only hold 2 valence electrons? Answer with a single words or term.

Boron

________ has 6 electrons.

model

The ________ does not account for the nonconductitvty of ionic solids.

Electronegativity

________ decreases going down a column.

Formal charge

________ can be found by finding the difference between the number of valence electrons in the atom and the number of electrons that it "owns "in a Lewis Structure.