Write two limitations of Mendeleev periodic table
Write two limitations of Mendeleev periodic table
Answers
endeleev arranged 63 elements known at that time in the periodic table. According to Mendeleev “the properties of the elements are a periodic function of their atomic masses.” The table consists of eight vertical column called ‘groups’ and horizontal rows called ‘periods’
Limitations of mendeleev’s classification :
(i) He could not assign a correct position of hydrogen in his periodic table, as the properties of hydrogen resembles both with alkali metals as well as with halogens.
(ii) The isotopes of the same element will be given different position if atomic number is taken as basis, which will disturb the symmetry of the periodic table.
(iii) The atomic masses do not increases in a regular manner in going from one elements to the next.
So it was not possible to predict how many elements could be discovered between two elements.
✨✔️✔️HERE IS YOUR ANSWER...
✔️ No fixed position was given to hydrogen in periodic table. He could not assign a correct position to hydrogen.
✔️ No proper place was assigned to isotopes of elements.
✔️ Metals and Non-Metals are grouped together.
✨✔️HOPE IT HELPS YOU...
==============✌❤✌==============