The number of
subshells
17. Using the periodic chart on Page 1-39, determine the following
within each
main shell is
characteristics for the element arsenic:
equal to the
main shell
number.
a. Atomic symbol.
___________________
b. The atomic number.
___________________
c. The number of valence electrons.
___________________
d. The number of electron shells.
___________________
a. As
18. Match each term in column A with its definition in column B.
A
B
b. 33
____ (1) Atomic number.
a. The number of electrons in the
c. 5
nucleus.
d. 4
____ (2) Atomic symbol.
b. The abbreviation for each
element.
____ (3) Valence shell.
c. The outermost main shell.
____ (4) Valence electrons.
d. The electrons in the outer-most
shell.
e. The number of protons in the
nucleus.
(1) e.
19. Using the periodic chart on Page 1-39, determine the following
(2) b.
characteristics of the element argon.
(3) c.
a. The atomic symbol.
__________________
(4) d.
b. The atomic number.
__________________
c. The number of electron shells.
__________________
d. The number of valence electrons.
__________________
1-15
IT0341
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