Based on the clue 'alphabetically its right after radium', what is the answer?

What is referred to by 'alphabetically its 1'? Based on the clue 'alphabetically its first among the balkan countrie...', what is the answer? Based on the clue 'alphabetically its last among the nations of the w...', what is the answer? Based on the clue 'alphabetically its last of the noble gases', what is the answer? Based on the clue 'alphabetically its the first animal in the america...', what is the answer? Based on the clue 'alphabetically its the first book of the bible tha...', what is the answer? Based on the clue 'alphabetically its the first book of the king jame...', what is the answer? Based on the clue 'alphabetically its the first letter that doesnt ha...', what is the answer?