Which one of the following is NOT a compound?
Show answer & explanation
Correct answer: C
Explanation
The correct option is option 3 i.e. Iron.
| Iron |
Iron is a chemical element with symbol Fe and atomic number 26. |
| It is a metal that belongs to the first transition series and group 8 of the periodic table. | |
| It is by mass the most common element on Earth, right in front of oxygen, forming much of Earth's outer and inner core. |