group 2 metals (not finished)

Question 1

state three trends that happen as you go down group 2

Answer 1

atomic radius increases
1st ionisation energy decreases
mp/bp decrease

Question 2

how does atomic radius increase going down period 2?

Answer 2

a full energy level of electrons is added between each element

Question 3

how does the 1st ionisation energy decrease going down group 2?

Answer 3

all outer electrons in full s orbital
shielding increases
effective charge on nucleus decreases
weaker attraction to outer electron
so less energy required to remove the outer electron

Question 4

how does the mp/bp decrease going down group 2?

Answer 4

all form 2+ ions in metallic structure
increased shielding causes weaker effective uclear charge
decreases strength of electrostatic attractions with delocalised electrons
so less energy required to overcome them (mp/bp lower)