Difference between revisions of "Helium"
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==Key Stage 3== | ==Key Stage 3== | ||
[[File:HeliumSymbol1.png|right|300px|thumb|The [[Chemical Symbol|chemical symbol]] for [[Helium]].]] | [[File:HeliumSymbol1.png|right|300px|thumb|The [[Chemical Symbol|chemical symbol]] for [[Helium]].]] | ||
| − | [[File: | + | [[File:He-4_WK.PNG|right|200px|thumb|A 2 dimensional representation of a [[Helium]] [[atom]] with 2 [[proton]]s and 2 [[neutron]]s in the [[Atomic Nucleus|nucleus]] and 2 [[electron]]s orbiting the [[Atomic Nucleus|nucleus]].]] |
===Meaning=== | ===Meaning=== | ||
[[Helium]] is a [[Group 0]] [[element]], on the [[Periodic Table]], with an [[Atomic Number|atomic number]] of 2. | [[Helium]] is a [[Group 0]] [[element]], on the [[Periodic Table]], with an [[Atomic Number|atomic number]] of 2. | ||
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==Key Stage 4== | ==Key Stage 4== | ||
[[File:HeKS4.png|right|200px|thumb|The [[Chemical Symbol|chemical symbol]] for [[Helium]].]] | [[File:HeKS4.png|right|200px|thumb|The [[Chemical Symbol|chemical symbol]] for [[Helium]].]] | ||
| − | [[File: | + | [[File:He-4_WK.PNG|right|200px|thumb|A 2 dimensional representation of the [[Bohr Model]] of a [[Helium]]-4 [[isotope]] with 2 [[proton]]s and 2 [[neutron]]s in the [[Atomic Nucleus|nucleus]] and 2 [[electron]]s in its [[Outer Shell|outer shell]].]] |
===Meaning=== | ===Meaning=== | ||
[[Helium]] is a [[Group 0]] [[element]], on the [[Periodic Table]], with 2 [[proton]]s in the [[Atomic Nucleus|nucleus]]. | [[Helium]] is a [[Group 0]] [[element]], on the [[Periodic Table]], with 2 [[proton]]s in the [[Atomic Nucleus|nucleus]]. | ||
Latest revision as of 13:50, 19 February 2021
Contents
Key Stage 2
Meaning
Key Stage 3
Meaning
Helium is a Group 0 element, on the Periodic Table, with an atomic number of 2.
About Helium
- Helium has the chemical formula He.
- Helium has two protons and two neutrons in its nucleus giving it an Atomic Number of 2 and an atomic mass of 4.
- Helium is a Noble Gas.
- Helium is a gas at room temperature.
- Helium gas is less dense than air.
- An atom of Helium has a full outer shell of two electrons so it is inert.
Key Stage 4
A 2 dimensional representation of the Bohr Model of a Helium-4 isotope with 2 protons and 2 neutrons in the nucleus and 2 electrons in its outer shell.
Meaning
Helium is a Group 0 element, on the Periodic Table, with 2 protons in the nucleus.
About Helium
- Helium has the chemical formula He.
- The most stable isotope of Helium has two neutrons in its nucleus giving it an atomic mass of 4.
- Helium is a Noble Gas.
- Helium is a gas at standard temperature and pressure.
- Helium gas is less dense than air.
- An atom of Helium has a full outer shell of two electrons so it is inert.
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| Helium always has 2 protons. The most stable isotope has 2 neutrons. | |