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No, it is a naturally occurring element
Silver is a naturally occurring metal. It is an element in the Periodic Table.
Neither. Argon is naturally occurring noble gas
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The naturally occuring boron is the normal boron there is no synthetic or abnormal boron.
No, it is a naturally occurring element
Gold-198 is not naturally occuring.
Synthetic
Gold-198 is not naturally occuring.
Gold-198 is not naturally occuring.
No, gold is a naturally occurring mineral element.
Nitrogen is found naturally, for example in the atmosphere.
Sulphur (aka sulfur) is a naturally-occurring substance.
Silver is a naturally occurring metal. It is an element in the Periodic Table.
Neither. Argon is naturally occurring noble gas
Naturally occurring, Uranium. Synthetic, to be determined.
Gold is a naturally occurring element, symbol Au.