3.1.2 Group 2

Question 1

how many electrons in a group 2 outermost sub shell

Answer 1

2

Question 2

in which periodic group are redox reactions most common

Answer 2

2

Question 3

are group two oxidising or reducing agents

Answer 3

reducing agents

Question 4

what charge do group 2 ions posses

Answer 4

2+

Question 5

How and why does atomic radius change down group 2

Answer 5

Increase, as higher energy levels are filled whose orbitals are further from the nucleus

Question 6

How and why does Ionisation Energy change down group 2

Answer 6

Decreases, as attraction between outermost electron and nucleus decreases due to increasing atomic radius and electron shielding.

Question 7

How and why does Melting point change down group 2

Answer 7

decreases, as metallic bond strength decreases due to decreased charge density.

Question 8

How and why does Relative reactivity change down group 2

Answer 8

increases, as the outermost electron can be lost easier.

Question 9

charge density

Answer 9

the ratio of a metallic cation (nucleus) size to its charge