(i) Name the high energetic invisible electromagnetic waves which help in the study of the structure of crystals.
(ii) State an additional use of the waves mentioned in part (i).

Hint:When interacting with matter, X-rays are a type of ionising radiation—they are powerful enough to cause neutral atoms to expel electrons. The energy of the X-rays is deposited in the substance as a result of this ionisation process.

Complete answer:
X-rays are a type of electromagnetic radiation that may pass through solid objects such as the human body. X-rays penetrate different objects differently depending on their density. X-rays are used in medicine to provide images of bones and other body structures.

(i) X-rays are electromagnetic radiation that aids in the study of crystal structure.When an x-ray beam passes through a crystal, it creates a pattern on a photographic plate. The pattern is known as a crystallography (the arrangement of the atoms each crystal has its own crystallography). It displays the inside structure of the crystal.

(ii) X-rays are used to diagnose fractures in bones, teeth, and other soft tissues.

Note: While there are some concerns associated with radiation, it is also important to note that X-rays can aid in the early detection of sickness or injury, allowing for proper treatment. X-ray testing can sometimes save a person's life. The danger of X-rays stems from the radiation they emit, which can injure living tissues. This risk is minor, but it increases with cumulative exposure. That is, the more radiation you are exposed to over your lifetime, the greater your chance of radiation injury.