Iodine (I) - 53 on the Periodic Table | Periodic Table

Standard IUPAC: Iodine • Symbol: I • Atomic Mass: 126.90447 u

Quick Factsheet: Iodine (symbol I, atomic number 53) is element 53 on the periodic table of elements. It has a standard atomic weight of 126.90447 u and an electron configuration of [Kr] 5s2 4d10 5p5. On the periodic table, Iodine is classified in period 5 and group Main.

1. Periodic Table Position of Iodine (53 on the Periodic Table)

Element Iodine has atomic number Z = 53, meaning it contains 53 protons in its atomic nucleus and 53 electrons in its neutral state. On the standard periodic table of elements, Iodine is located in period 5 and group Main.

2. Electron Configuration & Oxidation States (Iodine Charges & Configuration)

Full Electron Configuration: [Kr] 5s2 4d10 5p5

Common Oxidation States (Charges): -1c,1c,3c,4,5c,7c

3. Physical Properties & Atomic Mass (Iodine Atomic Mass)

Element Iodine has a standard atomic weight of 126.90447 u. Its melting point is 386.85 K and boiling point is 457.4 K. The Pauling electronegativity value is 2.66.

Comprehensive chemical properties and data for Iodine (I, Z=53).

Explore interactive 3D electron orbitals, isotopes, and properties on the periodic table: Open on Interactive Table 🚀

4. Related Elements in the Same Chemical Family

H (Z=1) C (Z=6) N (Z=7) O (Z=8) F (Z=9) P (Z=15)

5. Frequently Asked Questions about Iodine (FAQ)

What is the chemical symbol and atomic number of Iodine?

The chemical symbol of Iodine is I and its atomic number is 53.

What is the atomic mass and electron configuration of Iodine?

Iodine has a standard atomic mass of 126.90447 u and ground-state electron configuration of [Kr] 5s2 4d10 5p5.

What periodic table group and period does Iodine belong to?

Iodine is located in period 5 and group Main on the periodic table of elements.

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