19,916
edits
Changes
no edit summary
[[Radium]] is a [[Group 2]] [[element]], on the [[Periodic Table]], with an [[Atomic Number|atomic number]] of 88.
===About Radium===
====Molecular Structure====
: [[Radium]] has the [[Chemical Formula|chemical formula]] [[Radium|Ra]].
: [[Radium]] [[atom]]s join together in large numbers to form a giant [[metal]] [[molecule]].
====Atomic Structure====
: [[Radium]] as 88 [[proton]]s and 138 [[neutron]]s in its [[Atomic Nucleus|nucleus]] giving it an [[Atomic Number]] of 88 and an [[Relative Atomic Mass|atomic mass]] of 226.
: An [[atom]] of [[Radium]] has only 2 [[electron]]s in its [[Outer Shell|outer shell]].
====Properties====
: [[Radium]] is the most [[Reactivity|reactive]] [[Alkali Earth Metal|alkali earth metal]].
: [[Radium]] 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]].
: [[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|room temperature]].
==Key Stage 4==
===Meaning===
[[Radium]] is a [[Group 2]] [[element]], on the [[Periodic Table]], with 88 [[proton]]s in the [[Atomic Nucleus|nucleus]].
===About Radium===
====Molecular Structure====
: [[Radium]] has the [[Chemical Formula|chemical formula]] [[Radium|Ra]].
: [[Radium]] [[atom]]s join together in a [[Giant Metallic Structure|giant metallic structure]].
====Atomic Structure====
: 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]].
: [[Radium]] [[ion]]s have lost two [[electron]]s to become [[Positive Charged|positively charged]].
====Properties====
: [[Radium]] is the most [[Reactivity|reactive]] [[Alkali Earth Metal|alkali earth metal]].
: [[Radium]] 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]].
: [[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]].