Which compound has properties most similar to mgcl2

1) n2cl4

2) cl2o

3) h2o

4) caf2

!

also, if possible, explain!

Magnesium chloride. An inorganic compound consisting of one magnesium and two chloride ions. The compound is used in medicine as a source of magnesium ions, which are essential for many cellular activities. Magnesium chloride anhydrous has also been used as a cathartic and in alloys

we can conclude that the melting point of table salt is above room temperature (it's actually 801 deg c). the melting point of mercury must be below room temperature (- 39 deg c).