All the outer planets have rings, but the planet with the most complex ring system is
jupiter
saturn
uranus
neptune

Saturday is the planet with the most compelx ring system

hydrogen is a compound or a single element and a element is a pure substence that cannot be separated into simpler subtances

clorine is a compound its a chemical substance that forms when two or more different elements combine

so both hydrogen and clorine are compounds

1. b.

2. d.

3. a.

5. d.

6. c.

these are the only ones that i know, i hope this , and good luck.