Question

Choose the correct option from the following :

• A. Due to vacant space in ice molecule its density is lower than water
• B. In ice molecule, oxygen is tetrahedrally surrounded by four hydrogen atom
• C. Both (a) and (b) are correct
• D. Both (a) and (b) are incorrect

Answer 1

The correct option is C Both (a) and (b) are correct

In ice molecule, each oxygen atom is tetrahedrally surrounded by four hydrogen (two by covalent bonds and two by hydrogen bonds). This open structure forms number of vacant space in ice and make it less dense than water molecule. Hence, ice will float over water.
Therefore, both option (a) and (b) are correct.