Choose the covalent compounds from the following choices br2 mgs so2 kf

Types of Bonds can be predicted by calculating the difference in electronegativity.

If, Electronegativity difference is,

                Less than 0.4 then it is Non Polar Covalent Bond

                Between 0.4 and 1.7 then it is Polar Covalent Bond

                Greater than 1.7 then it is Ionic

For Br₂;

                    E.N of Bromine      =   2.96

                    E.N of Bromine      =   2.96

                    E.N Difference             0.00          (Non Polar Covalent Bond)

For MgS;

                    E.N of Sulfur               =   2.58

                    E.N of Magnesium      =   1.31

                    E.N Difference                  1.27          (Ionic Bond)

For SO₂;

                    E.N of Oxygen      =   3.44

                    E.N of Sulfur          =   2.58

                    E.N Difference             0.86          (Polar Covalent Bond)

For KF;

                    E.N of Fluorine          =   3.98

                    E.N of Potassium      =   0.82

                    E.N Difference                3.16          (Ionic Bond)

Result: The Bonds in Br₂ and SO₂ are Covalent in Nature.

the link still does not work even when adding it to the url bar

explanation:

  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-