Q130: Iodine has _ valence electrons.
A)three
B)five
C)seven
D)eight
Q131: Carbon has _ valence electrons.
A)one
B)two
C)three
D)four
Q132: The electrons in the outermost energy level
Q133: Elements in the same period generally have
A)different
Q134: Group 2A elements are called
A)alkali metals.
B)alkali earth
Q136: Which element has the same number of
Q137: Which element has the same number of
Q138: In which group do all atoms have
Q139: A metalloid
A)is the same as a metal.
B)is
Q140: All noble gases have _ valence electrons.
A)three
B)five
C)seven
D)eight
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