Click any empty Hint or Answer to answer for that location
Some wrong answers will appear in red
The leftmost column is the hexadecimal number of the atomic number of the element. The first step in the quiz is to convert that number into Base-10 in the second column. If you do not want to make that conversion, type "skip" into the box and it will convert for you, BUT IT WILL COST YOU AN ANSWER. Finally, once you have the base-10 numbers, you can identify the elements by their Base-10 number.