P Block Elements Question 612
White enamel of our teeth is the hardest substance in the human body.
[Bihar CEE 1995]
Options:
A) $ Ca_3{{(PO_4)}_2} $
B) $ CaF_2 $
C) $ CaCl_2 $
D) $ CaBr_2 $
Show Answer
Answer:
Correct Answer: B
Solution:
The enamel of our teeth is the hardest substance in the body made up of $ Ca_5(PO_4)_3F $ and dentine below it made of $ Ca_3(PO_4)_2 $ .
BETA
