Iron - the rest are metals used in olympic medals.
Among iron, gold, carbon, and silver, the odd member is carbon, the only non-metal of the group. On the periodic table, the three metals are all in the central "transitional metals" area, but carbon is on the right side among the non-metals.
zinc because all other metals are in original form
Iron is an element. The other two are alloys containing copper.
Sulfur is the odd one out as it is a non-metal, while the others (gold, aluminum, silver, lead) are metals.
Platinum, because Gold And Silver , together with Copper and in the same Sub- Group of the Periodic Table. This means that Gold , Silver and Copper have the same number of electrons in their outmost energy shell.
Iron is the odd entry in this list.
The odd one out is aluminum. While gold and iron are both metals that are commonly found in their elemental forms and have significant uses in various applications, aluminum is a lightweight metal that is primarily used in alloys and is more reactive than the other three. Additionally, gold is a precious metal, while aluminum and iron are more widely used in industrial applications.
They aren't worthless, but the vast majority of Roman coins are struck in bronze which isn't worth as much as gold or silver, many were struck for circulation and bronze deteriorates with time meaning that many of the coins are not in good condition after being dug up 2,000 some odd years later. All of these affects value.
Iron. Iron is a metal while the others are nonmetals
Glass is the odd one out because it is not a metal, unlike steel, iron, and tin.
bronze ****************************** Mercury, as it is the only metal that is a liquid at room temperature.
Carbon is the odd one out because it is a non-metal, while copper, aluminum, and iron are metals.