Difference between revisions of "Iodine"
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====Molecular Structure==== | ====Molecular Structure==== | ||
: [[Iodine]] has the [[Chemical Formula|chemical formula]] [[Iodine|I<sub>2</sub>]]. | : [[Iodine]] has the [[Chemical Formula|chemical formula]] [[Iodine|I<sub>2</sub>]]. | ||
| − | : [[ | + | : [[Iodine]] [[atom]]s join together in a [[Covalent Bond|covalent bond]]. |
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| style="height:20px; width:200px; text-align:center;" |A [[Dot and Cross Diagram|dot and cross diagram]] of a [[Iodine]] [[molecule]]. | | style="height:20px; width:200px; text-align:center;" |A [[Dot and Cross Diagram|dot and cross diagram]] of a [[Iodine]] [[molecule]]. | ||
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====Atomic Structure==== | ====Atomic Structure==== | ||
: The most [[Stable Isotope|stable isotope]] of [[Iodine]] has 74 [[neutron]]s in its [[Atomic Nucleus|nucleus]] giving it an [[Relative Atomic Mass|atomic mass]] of 127. | : The most [[Stable Isotope|stable isotope]] of [[Iodine]] has 74 [[neutron]]s in its [[Atomic Nucleus|nucleus]] giving it an [[Relative Atomic Mass|atomic mass]] of 127. | ||
Revision as of 17:40, 31 March 2019
Contents
Key Stage 2
Meaning
Key Stage 3
Meaning
File:IodineSymbol.png
The chemical symbol for Iodine.
Iodine is a Group 7 element, on the Periodic Table, with an atomic number of 53.
About Iodine
Molecular Structure
- Iodine has the chemical formula I2.
Atomic Structure
- Iodine as 53 protons and 74 neutrons in its nucleus giving it an Atomic Number of 53 and an atomic mass of 127.
- An atom of Iodine is missing one electron from having a full outer shell.
- Iodine ions gain 1 electron to get a full outer shell and become negatively charged.
Properties
- Iodine is a non-metal element.
- Iodine is a more reactive Halogen than Astatine but less reactive than Bromine.
- Iodine reacts with Hydrogen to produce Hydrogen Iodide which dissolves in water to produce Hydroiodic Acid.
- Iodine is a mild bleaching agent.
- Iodine kills bacteria.
- Iodine is a purple solid at room temperature.
Key Stage 4
Meaning
Iodine is a Group 7 element, on the Periodic Table, with 53 protons in the nucleus.
About Iodine
Molecular Structure
- Iodine has the chemical formula I2.
- Iodine atoms join together in a covalent bond.
 |
| A dot and cross diagram of a Iodine molecule. |
Atomic Structure
- The most stable isotope of Iodine has 74 neutrons in its nucleus giving it an atomic mass of 127.
- An atom of Iodine is missing one electron from having a full outer shell.
- Iodine ions gain 1 electron to get a full outer shell and become negatively charged.
Properties
- Iodine is a non-metal element.
- Iodine is a more reactive Halogen than Astatine but less reactive than Bromine.
- Iodine reacts strongly with Hydrogen to produce Hydrogen Iodide which dissolves in water to produce Hydroiodic Acid.
- Iodine is a mild bleaching agent.
- Iodine kills bacteria.
- Iodine is a brown coloured gas at standard temperature and pressure.