Scientists have discovered that the rings around Saturn are made up of particles of icy water. How can scientists learn more
about these rings?

Which of these conditions most likely produces an unstable isotope?

The sum of the oxidation numbers in a neutral compound is always

Element j is 1s 2s 2p 3s . (i) how many unpaired electrons does j have? (ii) is j a good oxidizing agent or a reducing agent? (iii) state reason for the answer.