Question

Mendeleev found that the properties of the known elements followed a pattern that repeated every

a.7 elements.
b.5 elements.
c.14 elements.
d.10 elements.

Answer 1

The answer will be A. 7 elements

Step-by-step explanation:

I took a test and I got it right hope this helps<3 ^^

Answer 2

14 elements

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