periodic table Flashcards
1
Q
who first created the periodic table
A
Mandeleeve
2
Q
How did he arrange the periodic table
A
he arranged them in groups of how they behaved and left spaces for those elements that hadn’t been discovered
3
Q
how is the periodic table and atoms related
A
and elements group number is the same number of electrons on the outer shell
e.g
elements in group 7 has 7 electrons in it outer shells and group 0 have a full 8 electrons
4
Q
what are periods in the periodic table ?
A
the periods are on the side and they tell us the number of shells in an atom
