The German chemist Joan Dauereiner was the first to point out that the – McqOptions

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1.	The German chemist Joan Dauereiner was the first to point out that there is a definite tendency in the properties of the elements. In what year did he say this?
A.	May of the early 1700s
B.	May of the early 1800s
C.	May of the early 1900s
D.	none of these
Answer» C. May of the early 1900s

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