Difference between revisions of "Radium"
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[[Radium]] is a [[Group 2]] [[element]], on the [[Periodic Table]], with 88 [[proton]]s in the [[Atomic Nucleus|nucleus]]. | [[Radium]] is a [[Group 2]] [[element]], on the [[Periodic Table]], with 88 [[proton]]s in the [[Atomic Nucleus|nucleus]]. | ||
===About Radium=== | ===About Radium=== | ||
| + | :[[Radium]] was discovered by [[Marie Curie]]. | ||
====Molecular Structure==== | ====Molecular Structure==== | ||
: [[Radium]] has the [[Chemical Formula|chemical formula]] [[Radium|Ra]]. | : [[Radium]] has the [[Chemical Formula|chemical formula]] [[Radium|Ra]]. | ||
Revision as of 21:01, 19 April 2019
Contents
Key Stage 2
Meaning
Key Stage 3
Meaning
Radium is a Group 2 element, on the Periodic Table, with an atomic number of 88.
About Radium
Molecular Structure
- Radium has the chemical formula Ra.
- Radium atoms join together in large numbers to form a giant metal molecule.
Atomic Structure
- Radium as 88 protons and 138 neutrons in its nucleus giving it an Atomic Number of 88 and an atomic mass of 226.
- An atom of Radium has only 2 electrons in its outer shell.
Properties
- Radium is the most reactive alkali earth metal.
- Radium is more reactive than Carbon on the reactivity series so it must be extracted from its ore using electrolysis.
- Radium reacts strongly with water to produce Hydrogen gas and Radium Hydroxide and strongly with acid to produce Radium salts.
- Radium is a solid at room temperature.
Key Stage 4
Meaning
Radium is a Group 2 element, on the Periodic Table, with 88 protons in the nucleus.
About Radium
- Radium was discovered by Marie Curie.
Molecular Structure
- Radium has the chemical formula Ra.
- Radium atoms join together in a giant metallic structure.
Atomic Structure
- The most stable isotope of Radium has 138 neutrons in its nucleus giving it an atomic mass of 226.
- An atom of Radium has only 2 electrons in its outer shell.
- Radium ions have lost two electrons to become positively charged.
Properties
- Radium is the most reactive alkali earth metal.
- Radium is more reactive than Carbon on the reactivity series so it must be extracted from its ore using electrolysis.
- Radium reacts strongly with water to produce Hydrogen gas and Radium Hydroxide and strongly with acid to produce Radium salts.
- Radium is a solid at standard temperature and pressure.