3.2.2 - electrons Flashcards
1
Q
how many electrons can the 1st shell in an atom hold?
A
2 electrons
2
Q
how many electrons can the 2nd shell in an atom hold?
A
8 electrons
3
Q
how many electrons can the 3rd shell in an atom hold?
A
18 electrons
4
Q
what does the period (row) on the periodic table tell you about an elements electronic configuration
A
the number of occupied shells
5
Q
what does the group (column) on the periodic table tell you about an elements electronic configuration
A
number of electrons on the outer shell
