Mendeleev could not determine the accurate position of the hydrogen atom in his table.
This is because hydrogen’s characteristics are very similar to halogens and alkali metals.
Other key limitations in Mendeleev periodic table were that the atomic number in the table was not shown increasing in a regular pattern and the symmetry of the table was also disturbed.
Anamalous pair of elements : certain elements of highest atomic weights precede those with lower atomic weights ... ex: tellurium (atomic weight = 127.6) precedes iodine (atomic weight = 126.9)
elements with dissimilar properties were placed in same group as sub-group A and sub-group B.... ex: alkali metals like Li, Na, K, etc of 1A grouphave little resemblance with coinage metals like Cu, Ag, Au of 1B group.... Cl belongs to 7A group and Mn 7B, but they are non-metals and metals respectively ...
Answers & Comments
Mendeleev could not determine the accurate position of the hydrogen atom in his table.
This is because hydrogen’s characteristics are very similar to halogens and alkali metals.
Other key limitations in Mendeleev periodic table were that the atomic number in the table was not shown increasing in a regular pattern and the symmetry of the table was also disturbed.
AHOY MATEY !!
----------------
⇒ LIMITATIONS OF MENDELEEFF's PERIODIC TABLE :
WISH IT HELPED YOU ^_^
# BEBRAINLY :)