Which of the following CANNOT be the chemical symbol for an element?
A) Ca
B) Se
C) B
D) H₂
Correct Answer:
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Q64: _ are pure substances.
A)Homogeneous mixtures and elements
B)Elements
Q65: What is the chemical symbol for potassium?
A)P
B)Po
C)Pu
D)K
Q66: In the SI system of measurement the
Q67: The species represented by CO is
A)an atom
Q68: What is the name of the element
Q70: What is the name of the element
Q71: In the SI system of measurement,the unit
Q72: What is the name of the element
Q73: Which of the following represents a compound?
A)Co
B)Mn
C)CO₂
D)Na
Q74: What is the chemical symbol for iron?
A)Fe
B)I
C)In
D)Ir
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