Difference between revisions of "Sodium"
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: An [[atom]] of [[Sodium]] has only 1 [[electron]] in its [[Outer Shell|outer shell]]. | : An [[atom]] of [[Sodium]] has only 1 [[electron]] in its [[Outer Shell|outer shell]]. | ||
: [[Sodium]] [[ion]]s have lost an [[electron]] to become [[Positive Charged|positively charged]]. | : [[Sodium]] [[ion]]s have lost an [[electron]] to become [[Positive Charged|positively charged]]. | ||
+ | {| class="wikitable" | ||
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+ | |[[File:SodiumIonFormation.png|center|400px]] | ||
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+ | | style="height:20px; width:200px; text-align:center;" |A [[diagram]] showing the formation of a [[Sodium]] [[ion]]. | ||
+ | |} | ||
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====Properties==== | ====Properties==== | ||
: [[Sodium]] is a more [[Reactivity|reactive]] [[Alkali Metal|alkali metal]] than [[Lithium]] but less [[Reactivity|reactive]] than [[Potassium]]. | : [[Sodium]] is a more [[Reactivity|reactive]] [[Alkali Metal|alkali metal]] than [[Lithium]] but less [[Reactivity|reactive]] than [[Potassium]]. |
Revision as of 19:59, 31 March 2019
Contents
Key Stage 2
Meaning
Key Stage 3
Meaning
Sodium is a Group 1 element, on the Periodic Table, with an atomic number of 11.
About Sodium
Molecular Structure
- Sodium has the chemical formula Na.
- Sodium atoms join together in large numbers to form a giant metal molecule.
Atomic Structure
- Sodium has 11 protons and 12 neutrons in its nucleus giving it an Atomic Number of 11 and an atomic mass of 23.
- An atom of Sodium has only 1 electron in its outer shell.
Properties
- Sodium is a more reactive alkali metal than Lithium but less reactive than Potassium.
- Sodium is more reactive than Carbon on the reactivity series so it must be extracted from its ore using electrolysis.
- Sodium oxidises quickly in the presence of Oxygen so it must be stored in oil.
- Sodium reacts strongly with water to produce Hydrogen gas and Sodium Hydroxide.
- Sodium is a solid at room temperature.
Key Stage 4
Meaning
Sodium is a Group 1 element, on the Periodic Table, with 11 protons in the nucleus.
About Sodium
Molecular Structure
- Sodium has the chemical formula Na.
- Sodium atoms join together in a giant metallic structure.
Atomic Structure
- The most stable isotope of Sodium has 12 neutrons in its nucleus giving it an atomic mass of 23.
- An atom of Sodium has only 1 electron in its outer shell.
- Sodium ions have lost an electron to become positively charged.
A diagram showing the formation of a Sodium ion. |
Properties
- Sodium is a more reactive alkali metal than Lithium but less reactive than Potassium.
- Sodium is more reactive than Carbon on the reactivity series so it must be extracted from its ore using electrolysis.
- Sodium oxidises quickly in the presence of Oxygen so it must be stored in oil.
- Sodium reacts strongly with water to produce Hydrogen gas and Sodium Hydroxide.
- Sodium is a solid at standard temperature and pressure with a melting point of 97.8 °C.