the periodic table

how are elements arranged in the periodic table

elements are arranged basen on their atomic number

what is a period in the periodic table

horizontal rows

what is a group in the peridoic table

vertical rows

what does it mean for the elements in they are in the same group

means that they have similar chemical properties

what do all elements have in common fit hey are in the same period

same number of electron shells

what does the group number show for each element

the number of electrons that are in the outer shell

what is the electrical conductivity for metals and non metals

metals- good electrical conductors

non-metals- not good electrical conductors

what is the acid base for metal oxides and non metal oxides?

metal oxides- basic (can react with acids)

non-metal oxide- acidic (reacts with bases)

where are metals and non metals located n the periodic table

metals- they are located on the left and middle of the periodic table

non metals- they are located on the right side of the periodic table

why do elements in the same group have similar properties

because since reactivity is based on the numbers on the outer shell.

why do Nobel gases (group 0) not react

because since they have a full outer shell of electrons this makes them stable so they do not need to gain, lose or share electrons with other atoms.