Balance the following chemical equation and identify the type of chemical reaction.
(a) `Mg(s)+Cl_(2)(g) to MgCl_(2)(s)`
`(b) HgO(s)overset("Heat")to Hg(l)+O_(2)(g)`
`(c) Na(s)+S(s)overset("Fuse")toNa_(2)S(s)`
`(d)TiCl_(4)(l)+Mg(s)toTi(s)+MgCl_(2)(s)` ,
`(e)CaO(s)+SiO_(2)(s)toCaSiO_(3)(s)`
`(f) H_(2)O_(2)(l)overset("UV")to H_(2)O(l)+O_(2)(g)`

Explanation

`(a) Mg(s)+Cl_(2)(g) to MgCl_(2)(l) ("Combination reaction")`
`(b) 2HgO(s)overset("Heat")to 2Hg(l)+O_(2)(g)("Thermal decomposition reaction")`
`(c) 2 Na(s)+S(s)overset("Fuse")to Na_(2)S(s)("Combination reaction")`
`(d) TiCl_(4)(l)+2Mg(s) to Ti(s)+2MgCl_(2)(s)("Displacement reaction")`
`(e) CaO(s)+SiO_(2)(s)toCaSiO_(3)(s)("Combination reaction")`
`(f) 2H_(2)O_(2)(l) overset("UV") to 2H_(2)O(l)+O_(2)(g)("Photodecomposition reaction")`