atomic symbol
10. The electrons in an atom orbit the nucleus in concentric shells. Valence
electrons are the electrons which can be lost or shared to form chemical
bonds. In general, the bonding, or valence, electrons are located in the
outermost main shell of the atom. Thus, the electrons in the outermost shell
are called valence electrons, and the outermost shell is called the valence
shell. The outermost shell, or valence shell, can contain a maximum of eight
electrons. Most atoms have less than eight electrons in their valence shells
and combine with other atoms by gaining, losing, or sharing electrons to form
molecules or compounds.
Match each term in column A with its definition in column B.
A
B
(1) Atomic number.
a. The electrons in the
outermost shell.
(2) Atomic symbol.
b. The number of protons in
(3) Valence shell
the nucleus.
(4) Valence electrons
c. The abbreviation for each
element.
d. The outermost main shell.
e. The outermost subshell.
1-11
IT0341
Previous Page
