a On what basis did Mendeleev arrange the element in his periodic table b On what basis are they arr...

Question

a On what basis did Mendeleev arrange the element in his periodic table b On what basis are they arranged now

Accepted Answer

a Based on atomic masses Mendeleev arranged the elements in his periodic table b Now the elements are arranged based on atomic numbers

Lakhmir Singh Solutions Class 10 Chemistry Solutions for Exercise in Chapter 5 - Chapter 5 Periodic Classification of Elements