17, Cl, Chlorine

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atomic number of Chlorine

17

period 3 means

3 electron shells

group 17 means

7 valence electrons

chemical element of Cl

Chlorine

chemical symbol of Chlorine

Cl

four examples of halogens

Fluorine F, Chlorine Cl, Bromine Br, Iodine I

are halogens cations (+ve) or anions (-ve)

form -1 ions, meaning that they are anions as they gain 1 electron to become stable

what group is Chlorine in

group 17

which family grouping is Chlorine in

halogens

characteristics of group 17

not found in a pure form (only bonded with itself), have coloured, poisonous vapours, less shells; more reactive

what period is Chlorine in

period 3


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