periodic table Flashcards
How many groups are in the periodic table?
1-7 and then 0
where are metals found on the periodic table?
metals are found on the left side
where are non-metals found on the periodic table?
non metals are found on the right side of the
what are two differences between the modern periodic table and Mendeleev’s periodic table?
Arranged the elements in order of increasing relative atomic mass.
He left gaps for elements not yet discovered.
What are rows called in the periodic table and what order are they organised?
Rows, in order of increasing atomic number
vertical columns are called…
groups
the electronic configuration of an element is related to…
its position on the periodic table
the number of electron shells linked to to the…
period number
the number of electrons in the outermost shell links to…
group number
the total number of electrons in all shells link to..
atomic number
how to work out what period an element is in by the electronic configuration
add up the amount of separate numbers
eg . sodium ( 2.8.1 ) =period 3
how to work out what group an element is based on the electronic configuration?
the last number on the configuration shows you what group the element is in.
eg- sodium (2.8.1 ) = group 1
how do you work out the atomic number from the electronic configuration?
add all the numbers up
eg- sodium - (2.8.1) = atomic number 11 ( 2+8+1)
