Which of the halogens is a liquid at room temperature?
A) fluorine
B) chlorine
C) bromine
D) iodine
Correct Answer:
Verified
Q124: The noble gases are a unique group
Q125: Which element is an inner transition metal?
A)Ba
B)K
C)La
D)Zr
Q126: In which group do all atoms have
Q127: In which group do all atoms have
Q128: In which group do all atoms have
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
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