RTE1100 Physics Ch. 2: Structure of the Atom

Atoms in each period have the same number of

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

The electrons stay in orbit around the nucleus because of

The electron shell closest to the nucleus is lettered

Atoms in each group have the same number of

A positive ion is

An Atom of oxygen (¹⁶₈O) has

The atomic nucleus contains

Atoms with different number of protons but the same combined number of protons and neutrons are

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

The three fundamental particles of the atom are the

Bond b/w 2 atoms is due to 1 atom giving up an electron & the other atom gaining an electron

When an atom becomes - or + charged it is usually due to a change in the number of

If an atom has more protons than electrons it will

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

How many electrons does a neutral atom of carbon (¹²₆C) have?

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

How many neutrons does ⁷₃Li (lithium) have?

In a neutral atom, the atomic number indicates the number of

Except for the K shell, the max # of electrons that can be in the outermost shell of an atom

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

If an atom has more electrons than protons it will

The simplest form of the substances that form matter is the

The force that holds the protons and neutrons together in the nucleus is the

The mass of an atom is primarily due to the mass of the

¹³¹₅₃I and ¹³²₅₄Xe are

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

Atoms with the same number of protons but different number of neutrons are

⁷₃Li and ⁷₄Be are

A negative ion is

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

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

Atoms with the same number of neutrons but different number of protons are

Atoms w/ the same atomic # & atomic mass number but have different energy w/in their nuclei are

When the bond between 2 atoms is due to their sharing an outer-shell electron, this is called a

The number of protons and neutrons in the atom’s nucleus is the

²³₁₁Na is an _______________ of ²²₁₁Na.

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

A compound consists of

The most commonly known modern atomic theory was developed by

The component of the nucleus that has mass but no electrical charge is the