the Periodic Table 0.0 / 5 ? Chemistrythe Periodic TableIGCSEAll boards Created by: iona.flCreated on: 03-06-16 16:15 What does the term 'Period' mean in chemistry? The horizontal rows show how many shells the elements have 1 of 5 What does the term 'group' mean? The vertical rows show you hom many electrons there are in the outer shell 2 of 5 Which group number are the a)noble gases b)alkali metals c)alkali earth metals d) neutrals e)halogens a) 0/8 b)1 c)2 d)4 e)7 3 of 5 Why are the noble gases un-reactive? They are stable as they have a full outer shell meaning they do not need to react. 4 of 5 What are all of the colors and states of the halogens at room temperature? Fluorine-Yellow,gas Chlorine-Green,gas Bromine-Red/Brown,liquid Iodine-Grey,solid Astatine-Black,solid 5 of 5
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