Physics, asked by joyeetarocks5706, 1 year ago

How did mendeleaf correct the atomic weight of beryillium as 9

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Answered by Mahekkothari
1
Most of  Mandeleev's suggestion were based
on assumption. There were no experimental proof for his suggestions. Example, he changed the atomic mass of Be to 9 and placed above Mg in his table which is correct, as the properties of Be and Mg were same. Later these elements were named as alkaline earth metal. 
So Mandeleev's suggestion was correct. 

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