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max2010maxim [7]
3 years ago
13

Why didn't mendeleev use atomic number to arrange the elements?

Chemistry
1 answer:
Pepsi [2]3 years ago
8 0

The primary reason for this was that Mendeleev didn't know that atomic numbers actually existed. Atomic numbers were only discovered a period after Mendeleev's time. The use of X-rays made it possible to find the atomic number, and those had not been discovered yet. <span>
<span>The periodic table was then arranged in 1913 by Henry Moseley in an arrangement according to atomic number.</span></span>

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