Based on the clue 'atomic particle paths can be tracked in this devic...', what is the answer?

Based on the clue 'atomic number 28 if you dont know 1 lb of pure thi...', what is the answer? Based on the clue 'atomic number 30 its often used in sunscreen', what is the answer? Based on the clue 'atomic number 35 this element begins with the firs...', what is the answer? Based on the clue 'atomic number 9 its a trace element in the body no...', what is the answer? Based on the clue 'atomic weight is one stat for each of these a subs...', what is the answer? Based on the clue 'atomically speaking its no 100 7', what is the answer? Based on the clue 'atoms of this abundant element are the smallest s...', what is the answer? Based on the clue 'atoms of this lightest element make up about 90 of...', what is the answer?