Question

13. Density of ice is less than water because
a) It forms open cage structure
b) It expands when it is cooled to 0°C
c) It forms hydrogen bond
d) All​

Answer 1

answer - A

In ice, four hydrogen atoms tetrahedrally surround each oxygen atom in such a way that two hydrogen atoms are linked to oxygen atom by covalent bonds (These lie closer to the oxygen atom at a distance of 1.00

A

˚

) and the other two hydrogen atoms are linked to the central oxygen atom by hydrogen bonds. (These lie away from oxygen atom at a distance of 1.76

A

˚

.) The hydrogen atoms of water molecules are located at the corners of tetrahedron