Which of the following bones is related to the skull?

Epiphyseal discs,which are present at the ends of long bones,are responsible for:

Which ribs are floating ribs?

Where are the occipital condyles located?

Statement-$I$: Each rib is a thin flat bone connected dorsally to the vertebral column and ventrally to the sternum.
Statement-$II$: The $8^{th}$,$9^{th}$,and $10^{th}$ pairs of ribs do not articulate directly with the sternum but join the seventh rib with the help of hyaline cartilage. These are called floating ribs.

Which elements are most abundant in the formation of bones?