Which of the following elements is classified as a semimetal?
A) gold
B) astatine
C) osmium
D) berkelium
Correct Answer:
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Q157: Calcium belongs to the _ group of
Q158: Which of the following elements is a
Q159: Which of the following elements has chemical
Q160: _ is used in lights and signs.
A)Neon
B)Helium
C)Iodine
D)Silicon
Q161: A sample of pure calcium fluoride with
Q163: All of the following elements are nonmetals
Q164: Which of the following represent isotopes? A:
Q165: Sodium metal and water react to form
Q166: What is the element symbol for an
Q167: Which of the following elements is a
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