C3 The Periodic Table
C3 The Periodic Table

... On the periodic table in front of you, annotate everything you know about what it tells you. ...
Halogens - Cronodon
Halogens - Cronodon

... Group 7: The Halogens Fluorine (F), Chlorine (Cl), Bromine (Br), Iodine (I-) and Astatine (At). The halogens are very reactive elements and so, just like the Group 2 metals, they are not found in nature in elemental form. Instead they occur as halide ions (fluoride (F–), chloride (Cl–), bromide (Br– ...
C1a - Mr Corfe
C1a - Mr Corfe

... Gold Au  silver Ag RULE: An metal is more reactive if it is further to the left of the periodic table or further down in the group (not including groups 3-8) TYPES OF REACTIONS PHYSICAL – changing of states EXOTHERMIC – gives out heat ENDOTHERMIC – take in heat from it surrounding THERMAL DECOMPOSI ...

Halogen

The halogens or halogen elements (/ˈhælɵdʒɨn/) are a group in the periodic table consisting of five chemically related elements: fluorine (F), chlorine (Cl), bromine (Br), iodine (I), and astatine (At). The artificially created element 117 (ununseptium) may also be a halogen. In the modern IUPAC nomenclature, this group is known as group 17.The name 'halogen' means 'salt-producing'. When halogens react with metals they produce a wide range of salts, including calcium fluoride, sodium chloride (common salt), silver bromide and potassium iodide. The group of halogens is the only periodic table group that contains elements in three of the four main states of matter at standard temperature and pressure. All of the halogens form acids when bonded to hydrogen. Most halogens are typically produced from minerals or salts. The middle halogens, that is chlorine, bromine and iodine, are often used as disinfectants. Organobromides are the most important class of flame retardants. Elemental halogens are generally toxic.