Which of the following is not a proper symbol for an element?
A) C
B) Ca
C) CO
D) Co

Name: Which of the following is not a proper symbol for an element? A) C B) Ca C) CO D) Co
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Question

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A proper symbol for an element consists of one or two letters representing the element's name. Option C (CO) is not a proper symbol for an element because it represents a compound composed of two different elements - carbon (C) and oxygen (O).

Which of the Following Is Not a Proper Symbol for an Element