Question

Mendeleev 's periodic table is upset by the fact that

Answer 1

Answer:

Mendeleev 's periodic table is upset by the fact that it has limitations

Explanation:

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.

BRAINLIEST PLEASE

Answer 2

Explanation:

Many elements have several isotope