| Answer | Crossword Clue |
|---|---|
| SULFUR | Atomic number 16 |
| sulfur | The chemical element of atomic number 16, a yellow combustible nonmetal |
| sulphurs | The chemical element of atomic number 16, a yellow combustible nonmetal |
| sulfurs | The chemical element of atomic number 16, a yellow combustible nonmetal |
| amu | (formerly) a unit of mass, equal to 1/16 the mass of an oxygen atom having atomic mass 16 |
| hexadecimal | (Relating to) a number system with a base of 16 |
| root | quantity taken an indicated number of times as an equal factor 2 is a fourth root of 16 |
