Lewis And Bohr Models

Convelent Bond

A chemical bond that involves sharing a pair of electrons between atoms in a molecule.

Anion

A negatively charged ion.

Cation

A positive charged ion, (pussitive)

Proton

A subatomic particle that has a positive charge and that is found in the nucleus of an atom.

Neutron

A subatomic particle that has no charge and that is found in the nucleus of an atom.

Octet Rule

Atoms are more stable when their outer most orbital is full. (a group of 8)

How many Lewis dots does barium have?

Barium has 2 dots.

Valence Shell

Electrons on the outermost energy level of an atom.

Isotope

Elements that have different number of neutrons but the same number of protons.

Ionic Bond

Formed when one or more electrons are transferred from one atom to another.

what group are the noble gasses in?

Group 18.

Bohr Model

Model of the atom where electrons exist only in energy levels.

How many valence electrons does sodium have?

Sodium is in group 1, all elements in group 1 have 1 valence electron.

Nucleus

The center of an atom.

How many Lewis dots does the fluoride ion have?

The fluoride ion has 8 dots.

Chemical Bond

The force that holds two atoms together.

How many orbitals are in a potassium atom?

There is 4 orbitals in a potassium atom.

How many electrons are in the last shell of a sulfur atom in a Bohr diagram?

There is 6 electrons in the last shell of a sulfur atom.

Lewis Diagram

a diagram that illustrates chemical bonding by showing only an atom's valence electrons and its chemical symbol.

Bonding Pair

a pair of electrons involved in a covalent bond.