The order of the answers are as follows:
B
C
D
A
Ca₁₀(PO₄)₆(OH)₂ - hydroxyapatite
b. phosphorus (P) and calcium (Ca)
No. Oxygen isn't even a metal.
Alkaline earth metals are the elements of the second column of the periodic table.
Answer:
wheres the question or picture
Explanation: