On which atomic property proposed by Henry Moseley is the current periodic table of the elements based?
1. nucleus size
2. electric charge
3. atomic number
4. atomic weight
The current periodic table of elements is based on atomic number, which was proposed by Henry Moseley.
The current periodic table of the elements is based on the atomic number, which was proposed by Henry Moseley.
The current periodic table of elements is based on atomic number, which was proposed by Henry Moseley.
To understand this, let's go through the options one by one:
1. Nucleus size: Nucleus size refers to the size of an atom's nucleus, which is composed of protons and neutrons. While the size of the nucleus does have a role in determining an atom's properties, it is not the fundamental basis for organizing the periodic table.
2. Electric charge: Electric charge refers to the positive charge of protons and the negative charge of electrons. Although atomic particles' charges are fundamental to an atom's structure, they are not the basis for the organization of the periodic table.
3. Atomic number: Atomic number is defined as the number of protons in an atom's nucleus. This number distinguishes one element from another since each element has a unique number of protons. Henry Moseley proposed using the atomic number as the basis for organizing the periodic table, as it provides a consistent ordering of elements and helps predict their properties.
4. Atomic weight: Atomic weight refers to the average mass of an atom, which includes the sum of protons, neutrons, and electrons. While atomic weight is related to the mass of an element, it is not the main factor for organizing the periodic table.
In conclusion, the current periodic table of elements is based on the atomic number proposed by Henry Moseley. It is this number that provided a clear and logical basis for organizing elements by their chemical and physical properties.