C2.2.2 - Electronic Structures Flashcards
1
Q
How are elements arranged?
A
By atomic number
2
Q
Describe the electrons’ arrangement in an atom
A
First shell always holds upto 2 electrons
Second/Third shell always holds upto 8 electrons
From the fourth shell it’s 18
3
Q
What does the group number indicate?
A
How many electrons on the outer shell
4
Q
What do the overall amount of numbers indicate? (e,g. Oxygen having 2 in 2,6)
A
What period it is in
