3.2 Periodicity Flashcards
(4 cards)
1
Q
What are the trends across a period
A
Nuclear charge increases
Shielding stays constant
Stronger attraction between electrons and protons
Electrons are pulled closer to nucleus
Atomic radius decreases
2
Q
What is the trend in electronegativity across period 3
A
F is most electronegative
Increase in nuclear charge
Stronger attraction between bonding pair of electrons and nucleus
3
Q
How does the ionisation energy trend across the group
A
IE increases
Nuclear charge increases
Shielding stays constant
Attraction between outer electron and nucleus increase
4
Q
What are the deviations in ionisation energy
A
Al and S
