They are tetrahedral in shape
they carbon atom share all four of its outer electrons with other carbon atoms to form 3D shape
Answer: Argon ( Ar )
Explanation: This is element is silicon because it has 18 protons.
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Radioactivity or radioactive decay is the process that occurs when unstable isotopes or atoms release energy by emitting radiations such as ,gamma radiations, alpha radiations and beta radiations to attain stability. Therefore, in this case decay is likely to occur when a given atom has two many neutrons in its nucleus in order to attain stability.
Answer:
ultraviolet .rays....hope am correct
