group 2

Question 1

name of group 2 elements

Answer 1

alkaline earth metals

Question 2

ions formed by group 2 elements

Answer 2

+2 ions

Question 3

trend of atomic radius in group 2

Answer 3

increases as atoms have more shells of electrons

Question 4

trend of ionisation energy in group 2

Answer 4

decreases as
-more shielding so weaker attraction between nucleus and outer electrons.
-outer electron further from nucleus weakening attraction
-make it easier to remove outer electron so less energy needed to do so

Question 5

trend of melting point in group 2

Answer 5

decreases
–> metallic bonding weakens as the atomic size increases
–> distance between positive ions and delocalized electrons increases so electrostatic attractive forces decrease.