Microwave radiation has wavelengths from 1.0x10³ to 1.0 m, whereas the wavelength region for infrared radiation is 1.0×10-° to 1.0×10³ m. We can say that: 1. The frequency of microwave radiation is O infrared radiation. 2. The speed of microwave radiation is O infrared radiation.

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Q: atoms

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A: * Valency  electron  meanes outermost  electron     present  in an  atom.

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A: surround

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