The correct answer to this question is the unique atomic number which would be B
A combination reaction<span> is a </span>reaction<span> in which two reactants combine to form one product. It is also called a synthesis reaction. A characteristic to this type of reaction would be that there would always be only one product. Hope this answers the question. Have a nice day. </span>
Answer: the answewr is A. hope this helps!
Explanation:
The answer is 79 I believe