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Who was the Russian chemist show a definite relationship between chemical properties and atomic weights of the elements?
Mendeleev
What is the relationship between the atomic numbers and ionic radii of the elements in the group 3A?
I think that the ionic radii decrease
What do we now know to be the basis for the observations that Henry Moseley made about the pattern of X-ray frequencies emitted from elements?
Henry Moseley's observations regarding the pattern of X-ray frequencies emitted from elements were based on the relationship between the emitted X-ray wavelengths and the atomic number of the elements. He found that each element emits X-rays at specific frequencies that correlate with its atomic number, rather than its atomic mass. This led to the realization that atomic number is a more fundamental property than atomic mass, ultimately leading to the reorganization of the periodic table by atomic number instead of mass. Moseley's work provided a clearer understanding of atomic structure and the periodic law.
How did the scientist Explain the relationship between the colors observed and the structure of the atom?
The scientist explained that the colors observed in atomic spectra are due to the energy transitions of electrons between different energy levels within the atom. When an electron absorbs energy, it moves to a higher energy level; when it returns to its original state, it emits energy in the form of light at specific wavelengths, which correspond to distinct colors. This relationship between energy levels and emitted light provides insight into the atomic structure and helps identify elements based on their unique spectral lines.
What is the biggest jump in atomic weights between consecutive elements?
The biggest jump in atomic weights between consecutive elements occurs between hydrogen (H) and helium (He). Hydrogen has an atomic weight of approximately 1, while helium has an atomic weight of approximately 4. This increase of 3 atomic mass units represents the largest jump between consecutive elements on the periodic table.
Who was the Russian chemist show a definite relationship between chemical properties and atomic weights of the elements?
Mendeleev
What is the relationship between the atomic numbers and ionic radii of the elements in the group 3A?
I think that the ionic radii decrease
What is the relationship between the atomic number and the elements identity?
The atomic number of an element determines its identity. Each element has a unique atomic number, which is the number of protons in the nucleus of its atoms. This number defines the element and distinguishes it from other elements on the periodic table.
What relationship exists between elements and periods according to the periodic law?
The relationship between elements and periods according to the periodic law is that elements are arranged in periods based on their atomic number and properties. Elements in the same period have the same number of electron shells, while elements in the same group have similar chemical properties.
What is the law of traid?
A German chemist Dobernier observed relationship between atomic masses of several groups of three elements called traids.In these groups the central or middle element had atomic mass average to the other two elements.
What do we now know to be the basis for the observations that Henry Moseley made about the pattern of X-ray frequencies emitted from elements?
Henry Moseley's observations regarding the pattern of X-ray frequencies emitted from elements were based on the relationship between the emitted X-ray wavelengths and the atomic number of the elements. He found that each element emits X-rays at specific frequencies that correlate with its atomic number, rather than its atomic mass. This led to the realization that atomic number is a more fundamental property than atomic mass, ultimately leading to the reorganization of the periodic table by atomic number instead of mass. Moseley's work provided a clearer understanding of atomic structure and the periodic law.
What is the relationship between an atoms atomic number and one mole of that atom?
There is no general exact relationship, because of the existence of neutrons in the nuclei of almost all elements and the lack of effect of neutrons on atomic number. An atom's gram atomic mass, however, is equal to the mass of one mole of the atoms in question.
How did the scientist Explain the relationship between the colors observed and the structure of the atom?
The scientist explained that the colors observed in atomic spectra are due to the energy transitions of electrons between different energy levels within the atom. When an electron absorbs energy, it moves to a higher energy level; when it returns to its original state, it emits energy in the form of light at specific wavelengths, which correspond to distinct colors. This relationship between energy levels and emitted light provides insight into the atomic structure and helps identify elements based on their unique spectral lines.
What is the biggest jump in atomic weights between consecutive elements?
The biggest jump in atomic weights between consecutive elements occurs between hydrogen (H) and helium (He). Hydrogen has an atomic weight of approximately 1, while helium has an atomic weight of approximately 4. This increase of 3 atomic mass units represents the largest jump between consecutive elements on the periodic table.
Is there a difference between mass and atomic mass when dealing with elements?
Generally the term "atomic mass" is used for isotopes. For elements is preferred now "atomic weight".
What is the biggest and jump in atomic weights between consecutive elements on the periodic table Give the pair of elements and the difference in their relative atomic weights?
The largest jump in atomic weights between consecutive elements on the periodic table occurs between oxygen (atomic weight ~16.00) and potassium (atomic weight ~39.10), with a difference of approximately 23.10. This significant increase is due to the transition from lighter elements in the second period to heavier elements in the fourth period.
What did Johann Dobereiner notice about the atomic mass of the middle element in a triad?
Johann Dobereiner observed that in his triads of elements, the atomic mass of the middle element was approximately the average of the atomic masses of the other two elements in the group. This observation suggested a relationship between the properties of elements and their atomic masses, laying foundational ideas for the development of the periodic table. His work highlighted an early attempt to categorize elements based on their similarities, influencing later chemists in their understanding of element relationships.
