Question

Why is atomic mass of element more important to a chemist than its atomic number

Answer 1

Chemical properties of elements are due to the participation of electrons in the outer shells of the elements in various reactions. Now, atomic number of an element is equal to the number of electrons. Once the number of electrons are known, the electronic configuration of that element can help in predicting chemical properties of the element. Thus atomic number is more important than the at0mic mass of an element to a chemist

Answer 2

Answer:

atomic number is the number of electrons in an atom. But atomic mass is the total mass of P+, N and E-. The most of the chemical properties depend upon its valency and valence electrons and electronic configuration. So, atomic Mass is more important than atomic number.

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