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Find the odd one out from the following.
Mercury
Iron
Silver
Gold
None of the above
Mercury
Identify the physical state of the elements at room temperature; one is a liquid while the others are solids.
Identify the physical state of the elements at room temperature; one is a liquid while the others are solids.
Analyze the Physical States
Evaluate the state of matter for each element at standard room temperature and pressure. Mercury (Hg) exists in a liquid state, while Iron (Fe), Silver (Ag), and Gold (Au) exist in solid states.
Categorization
Grouping based on physical properties reveals that Iron, Silver, and Gold are classified as transition metals that remain solid at room temperature, whereas Mercury is the only metallic element that is liquid at room temperature.
B: Iron is a solid transition metal, C: Silver is a solid precious metal, D: Gold is a solid precious metal.
A is correct because Mercury is the only metal among the options that exists in a liquid state at room temperature.
In classification questions involving elements, always check for physical properties (state, conductivity) and chemical properties (reactivity, periodic table group) if the categories are not immediately obvious.
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