Which of these is a small, icy object consisting of gas and dust a tail that streams away and orbits the sun asteroid comet meteoroid star

Which other elements contain the same number of outer electrons as sodium

Carbon-14 undergoes radioactive decay in the reaction above. determine the type of radiation emitted in this reaction and describe what is happening to the nucleus during this reaction.

Molecular iodine, i2(g), dissociates into iodine atoms at 625 k with a first-order rate constant of 0.271 s−1. part a part complete what is the half-life for this reaction?