Question

name the scientist who first of all showed that atomic number of an element is a more fundamental property then its atomic mass

Answer 1

Henry Mosley first proved that the atomic number of an element is more important property than its atomic mass and thus, he created the latest periodic table of all the elements accordingly. He stated that the physical and chemical properties of an element are responsible for deciding the atomic number of that element, whereas the atomic mass only determines the physical properties of that element.

Answer 2

Answer:

(i) The atomic number of an element indicates the

number of protons in the nucleus or the number

of electrons in the atom.

(ii) All the atoms of an element have the same atomic

number.

(iii) The number of electrons present in the outermost

shell of an atom is responsible for the formation

of compounds either by sharing, accepting or

donating electrons.

(iv) The chemical properties of an element are decided

by its atomic numbers. Hence, atomic number is a

more fundamental property of an element than its

atomic mass.

Explanation: