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The reactive metal that gives off an orange glow in streetlamps is sodium. When an electric current passes through sodium vapor inside the lamp, it becomes excited and emits light in the orange part of the spectrum. This phenomenon is known as sodium vapor lamp or sodium-vapor light. Sodium is chosen for its high efficiency in converting electrical energy into light, making it a popular choice for outdoor lighting.

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Sodium is used in street lamps. The metal gives the light its characteristic orange colour.

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Wiki User

15y ago
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Sodium

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Wiki User

13y ago
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Q: What reactive metal gives of orange glow in streetlamps?
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