ule arranged in accordance with their atomic
the drawbacks of Mendeleev's periodic table
iguity about the position of hydrogen is not
Use your brain power!
elements..
Position of the elements in the periodic
Hiu
1. How is the problem regarding the
position of cobalt (5ºCo) and nickel
(59Ni) in Mendeleev's periodic table
resolved in modern periodic table?
2. How did the position of Cl and ci
get fixed in the modern periodic ta-
ble?
3. Can there be an element with atomic
mass 53 or 54 in between the two
elements, chromium Cr and
manganese Mn?
What do you think? Should hydrogen
be placed in the group 17 of halogens
or group 1 of alkali metals in the
modern periodic table?
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Answer:
shut up big question...........
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