Question

x ray edges is made up of which element

Answer 1

A commonly used source of X-rays is the X-ray tube (Coolidge type), which consists of a thermionic cathode and an anode made of copper or tungsten (i.e., high Z metal) enclosed in a highly evacuated glass tube. Electrons emitted from cathode are accelerated and then made to strike the anode.

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Answer 2

X rays edges are probably made up of Tungesten.