Chapter 6, Problem 100A

Interpretation Introduction

Interpretation:

The reason for most of the atomic mass in Mendeleev’s table to be different from today’s value needs to be explained.

Concept introduction:

According to Mendeleev’s periodic law the elements are arranged according to their atomic weights.

Answer to Problem 100A

For the measuring of atomic mass development of more accurate methods, most of the atomic masses in Mendeleev’s table differ from today’s values.

Explanation of Solution

Atomic number was not well- known when Mendeleev developed periodic table. From today’s value atomic masses of Mendeleev’s table differs as a result development of more accurate methods for measuring atomic mass.

Conclusion

Most of the atomic mass in Mendeleev’s table differs from today’s value for the measuring of atomic mass development of more accurate methods.