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JEE Main201910 Jan 2019Morning ShiftChemistrys Block ElementsActual

The metal used for making X-ray tube window is:

Options

  1. AM g
  2. BN a
  3. CB e
  4. DC a

Correct answer

C. B e

Step-by-step solution

Many metals can be used to make the anode of a X-ray tube, but only one metal is most suitable for the windows. It is beryllium because beryllium has lowest electron density outside its nucleus, and will absorb least X-ray. Beryllium is used in making windows in X-ray tubes.

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