Iodine - Element information, properties and uses | Periodic Table
网页Iodine is a black, shiny, crystalline solid with atomic number 53 and relative atomic mass 126.904. It is an essential element for humans and has many commercial uses in photography, medicine, chemistry and more.
Iodine - Wikipedia
网页Iodine is a non-metallic halogen with symbol I and atomic number 53. It has various oxidation states, a distinctive purple color, and is essential for thyroid function in humans and animals.
Iodine | Chemical Properties, Uses, & Applications | Britannica
网页2024年9月5日 · Iodine is a halogen element that forms iodide ions in nature and is essential for thyroid function. Learn about its history, occurrence, distribution, isotopes, and applications in medicine and chemistry.
Iodine - NIST Chemistry WebBook
网页Iodine is a diatomic molecule with the formula I2 and a molecular weight of 253.80894. The web page provides the chemical structure, IUPAC name, CAS number, and various constants of diatomic iodine, such as vibrational and rotational frequencies, electronic states, and transition energies.
Iodine - NIST Chemistry WebBook
网页Iodine is a diatomic molecule with the formula I2 and a molecular weight of 253.80894. Find its chemical structure, IUPAC name, CAS number, and condensed phase thermochemistry data, such as enthalpy, entropy, and heat capacity.
Iodine - NIST Chemistry WebBook
网页Iodine is a chemical element with the formula I2 and a molecular weight of 253.80894. It has a chemical structure of two iodine atoms bonded by a single bond and is also known as diatomic iodine or molecular iodine.
Iodine (I)
网页Iodine is the 53rd element in the periodic table and has a symbol of I and atomic number of 53. It has an atomic weight of 126.90447 and a mass number of 127. Iodine has fifty-three protons and seventy-four neutrons in its nucleus, and fifty-three electrons in five shells.
Iodine - Element, Halogen, Gas | Britannica - Encyclopedia Britannica
网页2024年9月5日 · Learn about the physical and chemical properties of iodine, a nonmetallic, nearly black solid that forms iodides with many elements. Find out how iodine acts as a Lewis acid, a weak oxidizing agent, and a strong reducing agent in different solvents and solutions.
WebElements Periodic Table » Iodine » the essentials
网页Iodine is a non-metallic element with atomic number 53 and relative atomic mass 126.90447. It has a violet-dark grey appearance, a high electronegativity, and forms compounds with most elements.
Iodine (I) - Chemical Elements.com
网页Name: Iodine Symbol: I Atomic Number: 53 Atomic Mass: 126.90447 amu Melting Point: 113.5 °C (386.65 K, 236.3 °F) Boiling Point: 184.0 °C (457.15 K, 363.2 °F) Number of Protons/Electrons: 53 Number of Neutrons: 74 Classification: Halogen Crystal Structure: Orthorhombic Density @ 293 K: 4.93 g/cm 3 Color: blackish Atomic Structure