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==Key Stage 2=====Meaning===[[Magnesium]] is a [[metal]].==Key Stage 3=====Meaning===[[File:MagnesiumSymbol.png|right|300px|thumb|The [[Chemical Symbol|chemical symbol]] for [[Magnesium]].]][[Magnesium]] is a [[Group 2]] [[element]], on the [[Periodic Table]], with an [[Atomic Number|atomic number]] of 12.===About Magnesium===: [[Magnesium]] has the [[Chemical Formula|chemical formula]] [[Magnesium|Mg]].: [[Magnesium]] as 12 [[proton]]s and 12 [[neutron]]s in its [[Atomic Nucleus|nucleus]] giving it an [[Atomic Number]] of 4 and an [[Relative Atomic Mass|atomic mass]] of 24.: [[Magnesium]] is the least [[Reactivity|reactive]] [[Alkali Earth Metal|alkali earth metal]].: [[Magnesium]] 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]].: [[Magnesium]] [[Chemical Reaction|reacts]] strongly with [[steam]] to produce [[Hydrogen]] [[gas]] and [[Magnesium Hydroxide]].: [[Magnesium]] is a [[solid]] (at [[Room TemperatureSTP|room temperature]]) .: An [[atom]] of [[Magnesium]] has only 2 [[electron]]s in its [[Outer Shell|outer shell]].: [[Magnesium]] [[ion]]s have lost 2 [[metalelectron]]s to become [[Positive Charged|positively charged]].==Key Stage 4=====Meaning===[[Magnesium]] is a [[Group 2]] [[element]] , on the [[Periodic Table]], with 12 [[proton]]s in the [[Atomic Nucleus|nucleus]].===About Magnesium===: [[Magnesium]] has the [[Chemical Formula|chemical formula]] [[Magnesium|Mg]].: The most [[Stable Isotope|stable isotope]] of [[Magnesium]] has 12 [[neutron]]s in its [[Atomic Nucleus|nucleus]] giving it an [[Relative Atomic Mass|atomic mass]] of 24.: [[Magnesium]] is the least [[Reactivity|reactive]] [[Alkali Earth Metal|alkali earth metal]].: [[Magnesium]] 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]].: [[Magnesium]] [[Chemical Reaction|reacts]] strongly with [[steam]] to produce [[Hydrogen]] [[gas]] and [[Magnesium Hydroxide]].: [[Lithium]] is a [[solid]] at [[STP|standard temperature and pressure]].: An [[atom]] of [[Magnesium]] has only 2 [[electron]]s in its [[Outer Shell|outer shell]].: [[Magnesium]] [[ion]]s have lost two [[electron]]s to become [[Positive Charged|positively charged]].