The periodic table basics (13-15) (paper 1)
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who originally arranged the periodic table
Dmitri Mendeleev
how are elements ordered in the modern periodic table
increasing atomic numbers
what are the verticle columns called in the periodic table
groups
what does the element’s group tell you about the element
the number of electrons on its outer shell
what are the group 1 elements called
alkali metals
what are the group 7 elements called
halogens
what are the group 0/8 elements called
noble gases
what are the horizontal rows of the periodic table called
periods
what do the properties of an element depend on
the number of electrons they have
how many electrons can possibly be on the 1st shell
2
how many electrons can possibly be on the 2nd shell
8 ~ all other than the first can be 8
what are the two ways metals can be classified
• metals • non-metals
do any of the nobel gases have colour
no they are all colourless
what is meant by the term inert
the element doesn’t react with much at all
give an example of inert element
group 0