Question

In what manner is the long form of periodic table is better than modern periodic table

Answer 1

The periodic table has been around for almost 140 years and has survived many revolutionary discoveries including that of subatomic structure and the development of quantum mechanics and relativity.

The order of the elements was originally provided by their increasing atomic weights (figure 1) but it was later found that atomic number provided a better ordering principle. For example, the elements tellurium and iodine fell perfectly into place according to their chemical behaviour but their position in the table would have been inverted if ordered strictly by their atomic weights.