Difference Between Iodine and Resublimed Iodine

Key Difference – Iodine vs Resublimed Iodine

Iodine is a chemical element having theatomic number53 and chemical symbol I. This chemical element belongs to the group of halogens in the periodic table. Iodine is known for its special ability to undergosublimation. Sublimation is thevaporizationof iodine crystals without going through a liquid phase. But if the sublimation and沉积are done repeatedly, we can get a pure form of iodine known as resublimed iodine. The key difference between iodine and resublimed iodine is thatiodine is a chemical element having symbol I whereas resublimed iodine is a compound having chemical formula I₂.

CONTENTS

1.Overview and Key Difference
2.What is Iodine
3.What is Resublimed Iodine
4.Side by Side Comparison – Iodine vs Resublimed Iodine in Tabular Form
5.概括

What is Iodine?

碘是一种化学元素的原子number 53 and chemical symbol I. It is a member of the halogen group.Halogengroup is the group 17 of the periodic table. Iodine is the largest halogen since it has the highest atomic number among other halogens in that group. Iodine is anonmetal.

碘的熔点为113.7°C。因此，在室温和压力下，碘作为固体存在。碘的沸点为184.3°C。碘晶体也可以进行升华。

The most stableoxidation stateof iodine is -1. This is because, when one electron is added to an iodine atom, all the orbitals of iodine are filled with electrons, which is a very stable state. The electrons configuration of iodine is [Kr] 4d¹⁰5s²5p⁵. The added electron fill the outermost 5porbital. This forms the iodideanion(I^–). Therefore iodine is a goodoxidizing agent(a substance that can undergo reduction by oxidizing a different compound). However, theatomic radiusof iodine is higher than halogen atoms; hence iodine has a low charge density. This makes it less reactive than other halogens. This makes iodine the least reactive oxidizing agent (among halogens).

Solid iodine appears as dark violet crystals. Liquid iodine and iodine vapor have brilliant violet color. Iodine crystals are highly soluble in nonpolar solvents. Ex: hexane. When dissolved inhexane，它形成棕色的液体溶液。

What is Resublimed Iodine?

重新排列的碘是碘，可以在第二或更远的时间内升华。碘的升华是将固体碘直接转化为碘蒸气，而无需经过液相。该术语不应与“ De-Sublimation”相混淆，这是升华的相反过程。该过程包括碘的升华，然后作为晶体沉积，然后再次升华。

重新释放的碘比正常碘纯化；纯度约为99-100％。重新发表碘的化学配方是我₂.

What is the Difference Between Iodine and Resublimed Iodine?

Iodine vs Resublimed Iodine
碘是一种化学元素的原子number 53 and chemical symbol I.	重新排列的碘是碘，可以在第二或更远的时间内升华。
Nature
Iodine is a dark violet crystal at room temperature, which is a violet liquid when melted and a violet vapor when vaporized.	重新排列的碘是通过碘的碘获得的碘，然后作为晶体沉积，然后再次升华。
Symbol or Formula
The chemical symbol of iodine is I.	重新排出碘的化学形式是我2.

概括– Iodine vs Resublimed Iodine

碘是一种卤素，通常用作氧化剂。从碘晶体产生重新排出的碘，以获得纯净的分子碘。碘和重新排出的碘之间的关键区别在于碘是具有符号I的化学元件₂.

Reference:

1. “Iodine (Resublimed Crystals/USP), Fisher Chemical,Available here.
2. “What is resublimation?” Answers, Yahoo!,Available here.
3. “Iodine.” Wikipedia, Wikimedia Foundation, 21 Feb. 2018,Available here.

Image Courtesy:

1. “Sample of iodine” By LHcheM – Own work(CC BY-SA 3.0)viaCommons Wikimedia
2. “Iodine-evaporating” By Jurii –(CC BY 3.0)viaCommons Wikimedia