Respuesta :
Cesium - although it is liquid at room temperature, metallic bonds can be seen.
The correct option is 2. cesium.
The following information should be considered:
- Since Cesium is in liquid at the room temperature so metallic bonds could be seen.
- But for bromine, krypton, and sulfur, the metallic bonds can't be seen.
- Therefore, the other options should be ignored.
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