The noble gases already have a full outer shell. The noble gases break the trend by being less reactive than the elements to their left.
A physician who specializes in treatment of the gums is called a periodontist.
Answer: choice A
Explanation: hope this helps
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<span>Enzymes antibodies and clotting compounds are made of proteins, in which these proteins generally exist in different forms and a common example of it are the amino acids. To add up, these enzyme antibodies aids the immune system by serving as a catalytic antibody producing a hapten molecule.</span>
