Answer:
static friction
Explanation:
static friction is the friction force that acts on objects at rest
1- mass
2. 3
3. Li2O
4. Of the strong attraction..................
The formula is CaCl2 as you need two Cl ions in order to combine with one Ca ion in order to form a neutral compound i.e. You need to have the same amount of charges therefore you have two Cl ions which have -1 charges for one +2 Ca ion.
Hope this helps :).