Explain the following in one or two sentence only. (a). Magnesium oxide is used for the linging of steel making furnace. (b). The molecule of beryllium chloride is linear, whereasthat of stannous is angular.

Explain the following in one or two sentence only. (a). Magnesium oxid

1.	Explain the following in one or two sentence only. (a). Magnesium oxide is used for the linging of steel making furnace. (b). The molecule of beryllium chloride is linear, whereasthat of stannous is angular.
Answer» Solution :(a). `MgO` is used for the lining of steel MAKING furnance because it is stable at very high temperatures and it forms slag with impurities. In this manner, it helps in removing the impurities.(b).`BeCl_(2)impliesH=(1)/(2)(V+M)=(1)/(2)(2+2)=2=sp` Where `V` is the number of valence electrons and `M` is the number of monovalent atoms attached to the CENTRAL atom. Therefore, `BeCl_(2)` is `sp` hybridised and has linear shape. `SnCl_(2)impliesH=(1)/(2)(V+M)=(1)/(2)(4+2)=3=sp^(2)`or hybridisaton =number of bond pairs+number of LONE pairs `=2+1=3=sp^(2)` Therefore,`SnCl_(2)` is `sp^(2)` hybridised, has PLANAR geometry and the ions are `V-`SHAPED or angular in shape.