What form of energy are microwaves?

Need in all of themmm only answer if you know plsssss

You are driving directly behind a pickup truck, going at the same speed as the truck. a crate falls from the bed of the truck to the road. (a) will your car hit the crate before the crate hits the road if you neither brake nor swerve? (b) during the fall, is the horizontal speed of the crate more than, less than, or the same as that of the truck?

Explain the difference in reactivity of the elements based on their electron configurations.