Difference between revisions of "Radium"
| (3 intermediate revisions by 2 users not shown) | |||
| Line 20: | Line 20: | ||
==Key Stage 4== | ==Key Stage 4== | ||
| + | [[File:RaKS4.PNG|right|200px|thumb|The [[Chemical Symbol|chemical symbol]] for [[Radium]].]] | ||
===Meaning=== | ===Meaning=== | ||
[[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]]. | ||
| Line 29: | Line 31: | ||
: The most [[Stable Isotope|stable isotope]] of [[Radium]] has 138 [[neutron]]s in its [[Atomic Nucleus|nucleus]] giving it an [[Relative Atomic Mass|atomic mass]] of 226. | : The most [[Stable Isotope|stable isotope]] of [[Radium]] has 138 [[neutron]]s in its [[Atomic Nucleus|nucleus]] giving it an [[Relative Atomic Mass|atomic mass]] of 226. | ||
: An [[atom]] of [[Radium]] has only 2 [[electron]]s in its [[Outer Shell|outer shell]]. | : An [[atom]] of [[Radium]] has only 2 [[electron]]s in its [[Outer Shell|outer shell]]. | ||
| − | : [[Radium]] [[ion]]s have lost two [[electron]]s to become [[Positive | + | : [[Radium]] [[ion]]s have lost two [[electron]]s to become [[Positive Charge|positively charged]]. |
====Properties==== | ====Properties==== | ||
: [[Radium]] is the most [[Reactivity|reactive]] [[Alkali Earth Metal|alkali earth metal]]. | : [[Radium]] is the most [[Reactivity|reactive]] [[Alkali Earth Metal|alkali earth metal]]. | ||
| Line 35: | Line 37: | ||
: [[Radium]] [[Chemical Reaction|reacts]] strongly with [[water]] to produce [[Hydrogen]] [[gas]] and [[Radium Hydroxide]] and strongly with [[acid]] to produce [[Radium]] [[salt]]s. | : [[Radium]] [[Chemical Reaction|reacts]] strongly with [[water]] to produce [[Hydrogen]] [[gas]] and [[Radium Hydroxide]] and strongly with [[acid]] to produce [[Radium]] [[salt]]s. | ||
: [[Radium]] is a [[solid]] at [[STP|standard temperature and pressure]]. | : [[Radium]] is a [[solid]] at [[STP|standard temperature and pressure]]. | ||
| + | |||
| + | |||
| + | ===References=== | ||
| + | ====AQA==== | ||
| + | |||
| + | :[https://www.amazon.co.uk/gp/product/0008158770/ref=as_li_tl?ie=UTF8&camp=1634&creative=6738&creativeASIN=0008158770&linkCode=as2&tag=nrjc-21&linkId=ec31595e720e1529e49876c3866fff6e ''Radium, page 110, GCSE Physics; Student Book, Collins, AQA ''] | ||
Latest revision as of 14:43, 5 March 2020
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.