Answer:
Opposite charges attract one another. The slight positive charges on the hydrogen atoms in a water molecule attract the slight negative charges on the oxygen atoms of other water molecules. This tiny force of attraction is called a hydrogen bond.
•A wave produced by the acceleration of an electric charge and propagated by the periodic variation of intensities of, usually, perpendicular electric and magnetic fields
In other words : They are radio waves, microwaves, visible light, and x rays are all examples of electromagnetic waves
They are produced by the motion of electrically charged particles.
I hope this helped ! :)
The formula for phosphorus is P4