Which functional groups are in the molecule? asap

Nuclear fusion is the source of energy for stars. besides hydrogen, which other element is most likely also common in stars?

Three cards with holes are arranged in a straight line. a light is shined through the first card’s hole and travels through all three cards. what does this tell you about light rays? a) that light is reflected b) that light is refractive c) that light travels in a straight line d) that light does not travel in a straight line

If two atoms are bonded to a central atom with no lone pairs,how will they be arranged