c8 periodic table

what do groups and periods mean

groups mean the amount of electrons in the outermost covalent shell and periods mean the amount of covalence shells

what are the trends in properties of group 1 metals

reactivity increases as you go down, since the outermost electrons are further away meaning weaker force of attraction, boiling point decreases as you go down the group since larger atoms have weaker intermolecular forces

what is group 1 called

alkali metals

what are the properties of group 7

they exist as diatomic molecules (Cl2) sharing a pair of electrons to make a full outer shell, they increase in density and decrease in melting point as you go down the group. they also get darker down the group

what is group 7 called

the halogens

what will happen to aqueous potassium bromide when its mixed with chlorine solution

since chlorine is higher in the group than bromine and therefore more reactive than it it will displace the bromine to form potassium chloride and bromine.

properties and name of group 8

noble gases that are colorless and inert, meaning that they dont react since they have full outer valence shells

what are transition metals

metallic elements in the middle of the periodic table, between groups 2 and 3, from the column of titanium to the column of copper.

properties of transition metals(10)

they are usually shiny, strong, hard, conduct electricity well, conduct heat well, they have high melting points, they have high densities, they often form colored compounds, they make good catalysts, they usually form more than 1 type of ion like iron(ii) and iron(iii)