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If you burn sodium in chlorine the two will react forming sodium chloride - what we know as table salt. If you burn silver in chlorine you get silver chloride. There are easier ways of making it - dissolve silver in hydrochloric acid for example.
This is a micrograph of part of the array of red/green/blue photosensors in a digital camera:-The resolution of a digital image, (the amount of detail recorded in the picture), depends on the number of the photosensors, (a.k.a. pixels), in the array.