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[[Bromine]] is a [[Group 7]] [[element]], on the [[Periodic Table]], with an [[Atomic Number|atomic number]] of 35.
===About Bromine===
====Molecular Structure====
: [[Bromine]] has the [[Chemical Formula|chemical formula]] [[Bromine| Br<sub>2</sub>]].
====Atomic Structure====
: [[Bromine]] as 35 [[proton]]s and 45 [[neutron]]s in its [[Atomic Nucleus|nucleus]] giving it an [[Atomic Number]] of 35 and an [[Relative Atomic Mass|atomic mass]] of 80.
: An [[atom]] of [[Bromine]] is missing one [[electron]] from having a full [[Outer Shell|outer shell]].
: [[Bromine]] [[ion]]s gain 1 [[electron]] to get a full [[Outer Shell|outer shell]] and become [[Negative Charged|negatively charged]].
====Properties====
: [[Bromine]] is a more [[Reactivity|reactive]] [[Halogen]] than [[Iodine]] but less [[Reactivity|reactive]] than [[Chlorine]].
: [[Bromine]] [[Chemical Reaction|reacts]] strongly with [[Hydrogen]] to produce [[Hydrogen BromideChloride]] which [[dissolve]]s in [[water]] to produce [[Hydrobromic Hydrochloric Acid]].
: [[Bromine]] is a [[bleach]]ing agent.
: [[Bromine]] kills [[bacteria]].
: [[Bromine]] is a pale green coloured [[gas]] at [[STP|room temperature]].
==Key Stage 4==
===Meaning===
[[Bromine]] is a [[Group 2]] [[element]], on the [[Periodic Table]], with 35 [[proton]]s in the [[Atomic Nucleus|nucleus]].
===About Bromine===
====Molecular Structure====
: [[Bromine]] has the [[Chemical Formula|chemical formula]] [[Bromine|Br<sub>2</sub>]].
====Atomic Structure====
: The most [[Stable Isotope|stable isotope]] of [[Bromine]] has 45 [[neutron]]s in its [[Atomic Nucleus|nucleus]] giving it an [[Relative Atomic Mass|atomic mass]] of 80.
: An [[atom]] of [[Bromine]] is missing one [[electron]] from having a full [[Outer Shell|outer shell]].
: [[Bromine]] [[ion]]s gain 1 [[electron]] to get a full [[Outer Shell|outer shell]] and become [[Negative Charged|negatively charged]].
====Properties====
: [[Bromine]] is a more [[Reactivity|reactive]] [[Halogen]] than [[Iodine]] but less [[Reactivity|reactive]] than [[Chlorine]].
: [[Bromine]] [[Chemical Reaction|reacts]] strongly with [[Hydrogen]] to produce [[Hydrogen BromideChloride]] which [[dissolve]]s in [[water]] to produce [[Hydrobromic Hydrochloric Acid]].
: [[Bromine]] is a [[bleach]]ing agent.
: [[Bromine]] kills [[bacteria]].
: [[Bromine]] is a brown coloured [[gas]] at [[STP|standard temperature and pressure]].