Group 2 + The Halogens

Question 1

What is BaSO4 used for ?

Answer 1

Used in x rays as it appears opaque.

Question 2

How does reactivity change down G2

Answer 2

Reactivity increases

Question 3

How does the solubility of G2 hydroxids change down the group

Answer 3

It increases

Question 4

What is the test for sulphate ions ?

Answer 4

Add BaCl , white precipitate will form of BaSO4

Question 5

NASA group 2 down group

Answer 5

Nuclear charge increases (more protons)
Atomic radius increases (more shells)
Shielding increases (more shells)
Nuclear attraction decreases

Question 6

Trend of boiling point down G2 and why

Answer 6

Boiling point decreases as the radius of the metal ions increases but the amount of e- stay the same
Less energy is needed to break the metallic bonds