Question

What is the electron configuration for iodine

Answer 1

The electron configuration for a neutral iodine atom is 1s² 2s² 2p⁶ 3s² 3p⁶ 4s² 3d¹⁰ 4p⁶ 5s² 4d¹⁰ 5p⁵, and for an iodine anion (I⁻), it gains one more electron, resulting in 1s² 2s² 2p⁶ 3s² 3p⁶ 4s² 3d¹⁰ 4p⁶ 5s² 4d¹⁰ 5p⁶.

Step-by-step explanation:

The electron configuration of iodine (I), which is a halogen with the atomic number 53, follows the aufbau principle and Hund's rule, filling orbitals in order of increasing energy. For a neutral iodine atom, the electron configuration is:

1s² 2s² 2p⁶ 3s² 3p⁶ 4s² 3d¹⁰ 4p⁶ 5s² 4d¹⁰ 5p⁵.

When iodine forms an anion with a 1- charge, such as when it's added to table salt as an essential dietary element to prevent goiter, it gains an extra electron. The electron configuration for the iodine anion (I⁻) is:

1s² 2s² 2p⁶ 3s² 3p⁶ 4s² 3d¹⁰ 4p⁶ 5s² 4d¹⁰ 5p⁶.

Answer 2

Hello!

To find electron configuration for Idoine we need to understand the following steps:

1. Finding the Atom's Atomic Number (tells us the specific number of electrons)
2. Determining the Charge of the Atom
3. Understanding the orbitals (Set S [Contains 2], P [Contains 3, Holds 6], D [Contains 5, Holds 10], F [Contains 7, Holds 14], and there are some theoritical ones.) [Overall the sets go SPDFGHIK
4. Understanding notations in configuartion. The notations display the number of electrons in the atom and set.

In this case, for Iodine. If we follow these rules we can see that the electron configuration is [Kr] 4d^10 5s^2 5p^5. We use Krytpon in front because that is the last full and stable noble gas before this particular element. Atoms are just trying to be stable so the goal is to achieve that full shell.