Question

what type of a wave is an x ray? mechanical electromagnetic

Explanation:

X - rays are a part of the electromagnetic spectrum. Electromagnetic waves do not require a medium to travel. Mechanical waves, on the other hand, need a medium (like sound waves need air, water etc.). X - rays can travel through vacuum (for example, X - rays from outer space reach the Earth's atmosphere), which is a characteristic of electromagnetic waves.

Answer:

electromagnetic