Which of these is an unsaturated solution? Choose ALL that apply. O 50 g of KCI in 50 g of water at 90°C
60 g of NH4Cl in 100 g of water at 80°C
O 70 g of NH3 in 100 g of water at 20°C
50 g of NH4Cl in 100 g of water at 60°C
80 g of KNO3 in 100 g of water at 60°C
O 60 g of Kl in 50 g of water at 10°C

a

c is having 4 valence electrons and is bonded to three hydrogens and one sulphur atom, therefore, the number of bond pair is equal to four. as all the valence electrons are used in forming the bonds so, there is no lone pair left on carbon.

s is having 6 valence electrons and is bonded to one other sulfur atom and one carbon atom, therefore, the number of bond pair is equal to 2. as only two valence electrons are used in forming the bonds so, four electrons are left. therefore, two lone pairs are present on s.

the answer is c.the valence of the atoms combine .