Concern the structure of various substances, at 0°C, which may consist of

 

A	widely-spaced molecules
B	molecular crystals
C	widely-spaced atoms
D	a giant structure of ions
E	a giant covalent structure

 

Select, from A to E, the structure of the following.    Each letter may be used more than once or not at all

1.         helium

2.         iodine

3.         diamond

4.         carbon monoxide

5.         ice