What is the rotation and revolution of mercury?
Mercury rotates very slowly at a rate of one rotation every 58.65 days. Mercury revolves around the sun once every 88 days.
Compare the period of revolution between mercury and plutowhat is the ratio between their period of rotation and why?
Prograde. In our solar system, prograde is counterclockwise rotation or revolution. Retrograde is clockwise rotation or revolution. Clockwise and counterclockwise are "as viewed from above the Earth's north pole". All solar system planets have a prograde rotation except Venus and Uranus which have retrograde rotation. All the planets have prograde orbital motion (revolution) around the Sun. So, Mercury has prograde motion in both cases.