M4 The
Periodic Table: Group 1 & 2 metals
Slide 40 of 42
Practice Questions
1.
N04/2/1. The table below gives some information about the elements in Group I of the Periodic Table.
explosive
1.88
669
caesium
extremely rapid
0.250
1.53
rubidium
very rapid
0.235
0.86
760
potassium
rapid
0.191
0.97
883
sodium
0.157
0.53
1342
lithium
reactivity with water
radius of atom in the metal / nm
density / g cm-3
boiling point / °C
element