Name the element that first shows some visible metallic properties at room temperature.
A
Fluroine
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B
Chlorine
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C
Bromine
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D
Iodine
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E
Astatine
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Solution
The correct option is B Iodine The high ionization energy makes the element appear non-metallic while Iodine and astatine having low ionization energy display metallic properties and Iodine was the first element to show some physical properties of metals.