In which group do all atoms have one valence electron in the ground state?
A) alkali metals
B) alkaline earth metals
C) halogens
D) noble gases
Correct Answer:
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Q133: Elements in the same period generally have
A)different
Q134: Group 2A elements are called
A)alkali metals.
B)alkali earth
Q135: Which element is a halogen?
A)Ba
B)Li
C)Xe
D)F
Q136: Which element has the same number of
Q137: Which element has the same number of
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
Q141: Anions migrate toward the cathode.
Q142: Alpha particles are heavier than beta particles.
Q143: Solar fuels such as hydrogen are being
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