Explain the arrangement of arm bone.

Explain how the elements are arranged in the form of the periodic table.

Give the number of Cranium bones?

Lanthanides and actinides are placed in separate rows at the bottom of the periodic table. Explain the reason for this arrangement ?

Explain the bones that form the skull.

Explain the structure of a typical long bone.

Arrange NH_3,H_2O and HF in the order of increasing magnitude of hydrogen bonding and explain the basis for your arrangement.

When the skeleton of an elephant and the skeleton of a mouse are prepared in the same size, the bones of the elephant are shown thicker than those of the mouse. Explain why the bones of an elephant are thicker than proportionate. The bones are expected to with stand the stress due to the weight of the animal.