TEST -  ATOMIC STRUCTURE

     This is the first test which i have published on this blog. I hope
     that this test will be useful to all my readers and i welcome 
     suggestions on how to make tests better in the future.

    Answers to this test will be posted on Friday night. I have tried
    to ensure that there are no errors. However, if you find any errors
    feel free to post a comment about the error with the question no.

                                      ALL THE BEST