Write the formula for:

a) potassium sulfide:
b) potassium chloride:
c) dinitrogen trioxide:
d) ammonium hydroxide:
e) tin (IV) oxide:
f) cadmium fluoride:
g) Coblat (II) sulfide :
h) beryllium iodate :
i) trisulfur dioxide:
j) nickel (II) oxalate ;
k) copper (I) oxide :
l) aluminum carbonate :
m) sulfur hexafluoride:
n) calcium chlorate :
o) cesium nitride :

Look at the attachment

  the   balanced   equation   for   reaction of   ca metal   with   o2 to   produce   cao   is as below

2 ca+ o2→ 2 cao2

  explanation

the reaction is   balanced     since the   number of atoms   in reactant side is   equal to   number of atoms   in   product side.   for   example   they   are 2   atom of   ca in   reactant   side   and   2   atoms of ca   in   the product side.

  the   process   is a   meet the   requirement   of   redox   reaction because :     calcium   is   oxidized   from   oxidation state 0   to 2+   while   oxygen   is reduced from   oxidation   state   0   to 2-

the number of protons in the nucleus of a given element. has slight luster and conducts electricity at high temperatures like metal.but like a nonmetal,boron is brittle and does not conduct electricity well at low temperatures. in graphite, carbon is a soft,brittle solid.it is reflective,ductile,or malleable.