Periodic Table - Electronic Configuration and Periodicity Flashcards
1
Q
valence electrons
A
- electrons in outermost energy level
- group A valence electrons are indicated by group number for any element within that group
2
Q
Lewis dot structures
A
- consists of the element symbol and dots to represent the number of valence electrons
- no more than two electrons on any side
- unpaired for less than four electrons is acceptable
- place one electron on each of the four sides and then start pairing up
3
Q
periodicity explained
A
- Group IA
- 3 Li
- 11 Na
- 19 K
- Group VIIA
- 9 F
- 17 Cl
- 35 Br
- 53 I
