Each atom of a particular element has a constant (average) weight, and in chemical reactions, the numbers and types of atoms in the reactants must be the same as the numbers and types of atoms in the products. This explains the law of the conservation of mass. Each molecule of a compound or polyatomic element is composed of a fixed number of one or more particular kinds of atoms; this explains the law of constant composition.
Each atom of a particular element has a constant (average) weight, and in chemical reactions, the numbers and types of atoms in the reactants must be the same as the numbers and types of atoms in the products. This explains the law of the conservation of mass. Each molecule of a compound or polyatomic element is composed of a fixed number of one or more particular kinds of atoms; this explains the law of constant composition.
b. the atomic number is constant. The mass number is not constant because there are isotopes of an element that have the same number of protons but different number of neutrons. Likewise, there are isotopes of the same element with different atomic weights.
The term is nuclear notation or nuclear symbol. It is a shorthand way to represent the composition of an atomic nucleus, indicating the chemical element symbol, mass number, and atomic number of a particular nucleus.
No, the atomic emission spectrum for a specific element will not change if you repeat the procedure under the same conditions. Each element has a unique set of energy levels, so the spectral lines emitted are constant.
The lattice constant is the distance between the repeating units in a crystalline structure, while the atomic radius refers to the size of an atom. In many cases, the lattice constant is closely related to the atomic radius, as it often reflects the spacing between atoms in a crystal. For example, in simple cubic structures, the lattice constant is approximately equal to twice the atomic radius, whereas in face-centered cubic structures, it is related by a factor of ( \sqrt{2} ) times the atomic radius. Thus, the lattice constant provides insights into the arrangement and spacing of atoms within a crystal.
Each atom of a particular element has a constant (average) weight, and in chemical reactions, the numbers and types of atoms in the reactants must be the same as the numbers and types of atoms in the products. This explains the law of the conservation of mass. Each molecule of a compound or polyatomic element is composed of a fixed number of one or more particular kinds of atoms; this explains the law of constant composition.
It explained law of conservation of mass and law of constant proportion and laid foundation to atomic physics n chemistry...
Chemists benefited from Dalton's atomic theory by gaining a better understanding of the composition and behavior of matter at the atomic level. This theory provided a foundation for modern chemistry and helped explain various chemical reactions and properties of elements.
Joseph Proust, based on experiments conducted at the end of the 18th Century claimed that elements combined in constant proportions. Dalton's atomic theory, (1903) built on this earlier work and put it into a theoretic framework.
b. the atomic number is constant. The mass number is not constant because there are isotopes of an element that have the same number of protons but different number of neutrons. Likewise, there are isotopes of the same element with different atomic weights.
Dalton doesn't explain the law of conservation of mass.
It is constant for elements. IT depends on number of protons that atom has.
Beta decay can change the composition of a nucleus by transforming a neutron into a proton, resulting in the emission of a beta particle (electron) and an antineutrino. This process increases the atomic number of the nucleus while keeping the mass number constant, resulting in a different element.
The atomic number is the number of protons in the atom.
The term is nuclear notation or nuclear symbol. It is a shorthand way to represent the composition of an atomic nucleus, indicating the chemical element symbol, mass number, and atomic number of a particular nucleus.
Planck's constant is a fundamental constant in physics that relates the energy of a photon to its frequency. It is denoted by the symbol ( h ) and has a value of approximately ( 6.626 \times 10^{-34} ) joule-seconds. This constant is crucial in quantum mechanics, as it helps explain how energy is quantized at the atomic and subatomic levels. Essentially, it shows that energy comes in discrete packets, or "quanta."
According to modern Periodic Table Atomic numbers are the fundamentals in order to explain the properties of an atom.One thing more and that is the concept of isotopes also make the atomic masses less strong to explain atomic properties which has no effect on atomic numbers.