Exam 2: Structure of the Atom

The word atom is derived from the Greek word atomos,meaning

A compound consists of

Atoms with the same atomic number but different atomic mass numbers are

Discovery of the electron is attributed to

The number of protons in an atom's nucleus is reflected in its

Two or more atoms that bond together form a(n)

Elements can only occur naturally.

Atoms in each group have the same number of

The component of the nucleus that has a positive charge and mass is the

The simplest form of the substances that form matter is the

The periodic table of elements classifies by period and group.The group is the

The N shell can hold _______ electrons.

If an atom has more electrons than protons it will

For the chemical element sodium (²²₁₁Na),the atomic number is

The earliest atomic theory is generally associated with

The atoms of the elements at the top of the periodic table of elements are the most complex.

The electrons rotate around the nucleus at a single energy level.

For the chemical element sodium (²²₁₁Na),the atomic mass number is

The electron shell closest to the nucleus is lettered

The L shell can hold _______ electrons.