Why is ice less dense than water and what kind of attractive forces must be overcome to melt ice ?

Ice is lighter than water due to

Why is entropy of ice less than that of water?

Liquid water is denser than ice due to

Why is floating ice less submerged in brine than in water?

An ice ball of radius a and mass m is placed at 0^@C inside a thick hollow sphere of inner and outer radii a and b whose thermal conductivity varies as k=alpha/r^2 , where alpha is a positive constant and r is the distance from centre. The temperature of surrounding is theta_0 and latent heat of fusion for ice is L_f . Then , time required to completely melt the ice ball is (Neglect the contraction in volume when ice melts into water and any change in thermal resistance due to melting of ice of the system.)

Ice seems to be denser than water but it floats over it. Explain.

Equal masses of ice (at 0^@C) and water are in contact. Find the temperature of water needed to just melt the complete ice.

For same mass of water and ice, why ice floats over water? (A)solids have lesser density than liquids (B)it has open - cage like structure in which lesser molecules are packed per mL than water (C)ice is lighter than water (D) when ice is formed water molecules come closer and start floating.

Statement-1: An ice cube is floating in water in a vessel at 0^(@)C when ice cube melts level of water in the vessel remain same. Statement-2: Volume of melted ice is same as volume of water displaced by ice.

An ice cube is floating in water above which a layer of a fighter oil is poured. As the ice melts completely, the level If water surface (or interface) and upper level of oil will