Difference between revisions of "Caesium"
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: [[Caesium]] is a more [[Reactivity|reactive]] [[Alkali Metal|alkali metal]] than [[Rubidium]] but less [[Reactivity|reactive]] than [[Francium]]. | : [[Caesium]] is a more [[Reactivity|reactive]] [[Alkali Metal|alkali metal]] than [[Rubidium]] but less [[Reactivity|reactive]] than [[Francium]]. | ||
: [[Caesium]] is more [[Reactivity|reactive]] than [[Carbon]] on the [[Reactivity Series|reactivity series]] so it must be [[Extraction of Metals|extracted]] from its [[ore]] using [[electrolysis]]. | : [[Caesium]] is more [[Reactivity|reactive]] than [[Carbon]] on the [[Reactivity Series|reactivity series]] so it must be [[Extraction of Metals|extracted]] from its [[ore]] using [[electrolysis]]. | ||
| − | : [[Caesium]] [[Chemical Reaction|reacts]] | + | : [[Caesium]] [[Oxidation|oxidises]] extremely quickly in the presence of [[Oxygen]] so it must be stored in a completely sealed container. |
| + | : [[Caesium]] [[Chemical Reaction|reacts]] explosively with [[water]] to produce [[Hydrogen]] [[gas]] and [[Caesium Hydroxide]]. | ||
: [[Caesium]] is a [[solid]] at [[STP|room temperature]]. | : [[Caesium]] is a [[solid]] at [[STP|room temperature]]. | ||
: An [[atom]] of [[Caesium]] has only 1 [[electron]] in its [[Outer Shell|outer shell]]. | : An [[atom]] of [[Caesium]] has only 1 [[electron]] in its [[Outer Shell|outer shell]]. | ||
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: [[Caesium]] is a more [[Reactivity|reactive]] [[Alkali Metal|alkali metal]] than [[Rubidium]] but less [[Reactivity|reactive]] than [[Francium]]. | : [[Caesium]] is a more [[Reactivity|reactive]] [[Alkali Metal|alkali metal]] than [[Rubidium]] but less [[Reactivity|reactive]] than [[Francium]]. | ||
: [[Caesium]] is more [[Reactivity|reactive]] than [[Carbon]] on the [[Reactivity Series|reactivity series]] so it must be [[Extraction of Metals|extracted]] from its [[ore]] using [[electrolysis]]. | : [[Caesium]] is more [[Reactivity|reactive]] than [[Carbon]] on the [[Reactivity Series|reactivity series]] so it must be [[Extraction of Metals|extracted]] from its [[ore]] using [[electrolysis]]. | ||
| − | : [[Caesium]] [[Chemical Reaction|reacts]] | + | : [[Caesium]] [[Oxidation|oxidises]] extremely quickly in the presence of [[Oxygen]] so it must be stored in a completely sealed container. |
| + | : [[Caesium]] [[Chemical Reaction|reacts]] explosively with [[water]] to produce [[Hydrogen]] [[gas]] and [[Caesium Hydroxide]]. | ||
: [[Caesium]] is a [[solid]] at [[STP|standard temperature and pressure]] with a [[Melting Point|melting point]] of 28.5 [[Degrees Celsius|°C]]. | : [[Caesium]] is a [[solid]] at [[STP|standard temperature and pressure]] with a [[Melting Point|melting point]] of 28.5 [[Degrees Celsius|°C]]. | ||
: An [[atom]] of [[Caesium]] has only 1 [[electron]] in its [[Outer Shell|outer shell]]. | : An [[atom]] of [[Caesium]] has only 1 [[electron]] in its [[Outer Shell|outer shell]]. | ||
: [[Caesium]] [[ion]]s have lost an [[electron]] to become [[Positive Charged|positively charged]]. | : [[Caesium]] [[ion]]s have lost an [[electron]] to become [[Positive Charged|positively charged]]. | ||
Revision as of 13:59, 31 March 2019
Contents
Key Stage 2
Meaning
Key Stage 3
Meaning
File:CaesiumSymbol.png
The chemical symbol for Caesium.
Caesium is a Group 1 element with an atomic number of 55.
About Caesium
- Caesium has the chemical formula Cs.
- Caesium as 55 protons and 78 neutrons in its nucleus giving it an Atomic Number of 55 and an atomic mass of 133.
- Caesium is a more reactive alkali metal than Rubidium but less reactive than Francium.
- Caesium is more reactive than Carbon on the reactivity series so it must be extracted from its ore using electrolysis.
- Caesium oxidises extremely quickly in the presence of Oxygen so it must be stored in a completely sealed container.
- Caesium reacts explosively with water to produce Hydrogen gas and Caesium Hydroxide.
- Caesium is a solid at room temperature.
- An atom of Caesium has only 1 electron in its outer shell.
- Caesium ions have lost an electron to become positively charged.
Key Stage 4
Meaning
Caesium is a Group 1 element with 55 protons in the nucleus.
About Caesium
- Caesium has the chemical formula Cs.
- The most stable isotope of Caesium has 78 neutrons in its nucleus giving it an atomic mass of 133.
- Caesium is a more reactive alkali metal than Rubidium but less reactive than Francium.
- Caesium is more reactive than Carbon on the reactivity series so it must be extracted from its ore using electrolysis.
- Caesium oxidises extremely quickly in the presence of Oxygen so it must be stored in a completely sealed container.
- Caesium reacts explosively with water to produce Hydrogen gas and Caesium Hydroxide.
- Caesium is a solid at standard temperature and pressure with a melting point of 28.5 °C.
- An atom of Caesium has only 1 electron in its outer shell.
- Caesium ions have lost an electron to become positively charged.