No one proposed it. It IS about the atomic number.
It is the scientist Rutherford. He proposed it in year 1919.
Protons and neutrons form the nucleusof the atom with electons orbiting it
No, Dmitri Mendeleev did not know about protons. The concept of protons was not discovered until later in the 20th century, after Mendeleev's time. Mendeleev is most famous for creating the periodic table of elements.
The nuclear model of the atom was proposed by Ernest Rutherford in 1911. This model suggested that an atom has a small, dense nucleus containing positively charged protons and neutral neutrons, surrounded by negatively charged electrons in empty space.
First of all he did'nt say that it was invisible, he said it was indivisible i.e. it cannot be divided further but it can be in the form of protons,electrons and neutrons.That's why it was not accepted. By the way he proposed atomic theory not a model. Models were proposed by THOMSON, RUTHERFORD and NEIL BOHR.
It is the scientist Rutherford. He proposed it in year 1919.
Protons and neutrons form the nucleusof the atom with electons orbiting it
Protons and neutrons form the nucleusof the atom with electons orbiting it
No, Dmitri Mendeleev did not know about protons. The concept of protons was not discovered until later in the 20th century, after Mendeleev's time. Mendeleev is most famous for creating the periodic table of elements.
Ernest Rutherford is credited with the discovery that protons exist in the nucleus of an atom through his gold foil experiment in 1911. He proposed that atoms have a small, positively charged nucleus where most of the mass is concentrated.
The nuclear model of the atom was proposed by Ernest Rutherford in 1911. This model suggested that an atom has a small, dense nucleus containing positively charged protons and neutral neutrons, surrounded by negatively charged electrons in empty space.
Hideki Yukawa proposed the first theory of the strong force via meson exchange particles.
no, because according to him an atom is a tiny indestructable sphere with mass on it.
Dalton used atoms composed of protons, neutrons, and electrons in his experiment. He proposed that atoms were indivisible and that elements were made up of these fundamental particles.
The "shell model" of atomic nucleus structure was proposed in 1962, which described protons and neutrons as arranged in specific energy levels within the nucleus similar to electron shells in an atom. It was developed to explain certain nuclear properties that were not accounted for by existing models at the time.
First of all he did'nt say that it was invisible, he said it was indivisible i.e. it cannot be divided further but it can be in the form of protons,electrons and neutrons.That's why it was not accepted. By the way he proposed atomic theory not a model. Models were proposed by THOMSON, RUTHERFORD and NEIL BOHR.
It is about the atomic number. the number of protons.