The element which X represents in the given graphic is Carbon
Determining the identity of an element
From the question, we are to determine the element in which X represents
Comparing the given graphic with the atomic notation shown in the attachment, X has a mass number of 12 and an atomic number of 6
The element which has a mass number of 12 and an atomic number of 6 is Carbon.
Hence, the element which X represents in the given graphic is Carbon.
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