Which of the following statements about planetary motion is false? a. each planet would move in a straight line without the sun's gravitational pull. b. each planet moves in a circular orbit around the sun. c. a planet's speed changes as it orbits the sun. d. each planet has a period of revolution and a period of rotation.

nacl or sodium chloride is an ionic compound. this is because an ionic compound pertains to a compound that consists of positively and negatively charged ions. in this case, na (sodium) has a tendency to lose one electron when it reacts with with other atoms, so the resulting sodium ion contains 11 protons and 10 electrons, thus making it positively charged (na+), when chlorine reacts, it usually gains one electron to form an ion called chloride, thus making it negatively charged ( since the ions are oppositely charged, they attract.