The first electron removed in the formation of iron cation is removed from a 4s orbital whose set of quantum numbers (n, l, ml) are 4, 0, 0 respectively.
<h3>What are quantum numbers?</h3>
The term quantum numbers refers to the numbers that are used to show the position of an electron in an atom. There are four sets of quantum numbers;
- Principal quantum number (n)
- Orbital quantum number (l)
- magnetic quantum number (ml)
- Spin quantum number(ms)
The electron configuration of iron is written as; [Ar] 3d6 4s2, the first electron removed in the formation of iron cation is removed from a 4s orbital whose set of quantum numbers (n, l, ml) are 4, 0, 0 respectively.
Learn more about quantum numbers: brainly.com/question/4732783