Formula of hydroxyapatite is?

The correct option is B

$3\left[\mathrm{Ca}3\right(\mathrm{PO}4\left)2\right].\mathrm{Ca}\left(\mathrm{OH}\right)2$

The formula for Hydroxyapatite is -

Step-1

Hydroxyapatite (HA) is a calcium phosphate mineral with the formula ${\mathrm{Ca}}_{10}{\left({\mathrm{PO}}_4\right)}_6{\left(\mathrm{OH}\right)}_2$

Step-2

Hydroxyapatite is a hydroxyl endomembrane of the apatite group, it is more stable compared to another calcium phosphate.

Step-3

Hence, its Formula is $3\left[{\mathrm{ca}}_3{\left({\mathrm{PO}}_4\right)}_2\right].\mathrm{Ca}{\left(\mathrm{OH}\right)}_2$

Therefore, the formula of hydroxyapatite is explained above.