We know that the conversion of 1 millimeters is equal to meter. And then the conversion of 1 meter is equal to km. Then the conversion of 1 millimeter to km will be
1 mm = m
1 m = km
So, 1 mm = × km = km.
As here the the distance is 4012 mm, then the distance in km will be
actually the answer is B because Chlorine, sulfur, and silicon. Chlorine is a halogen and gas. Sulfur forms an ion with a -2 charge in ionic bonds. Silicon is a well-known metalloid.