Question

factors on which elements were classified by Mandaleev

Answer 1

Explanation:

The important property that Mendeleev used for the classification of elements was atomic weight. He arranged all known elements in the form of periodic table. Some of the elements did not fit very well if the order of atomic weight was strictly followed. For these elements, he ignored the order of atomic weight (as atomic weight measurements can be incorrect) and placed the elements with similar properties together. Thus, iodine having lower atomic weight than tellurium (of group VI) was placed in group VII along with fluorine, chlorine and bromine due to similar properties and left some gaps for undiscovered elements.

Answer 2

Explanation:

FACTORS IN THE CLASSIFICATION OF MENDELEEV WAS GUIDED BY-

1. INCREASING ATOMIC MASSES

2. GROUPING OF SIMILAR ELEMENTS TOGETHER