Nature atomic model of Dalton
(Dalton's atomic theory. The atoms in the current Articles 1, 3, 4 are not present)
1. What is the smallest atom. Atomic particles, electrons, protons, neutrons, etc.
Article 3-4 atoms of the same element have the same physical properties. That is not equal mass. This will be discussed further in the "Eizo calls the" plum pudding model • Thomson discovered the electron • The trial of Robert Andrew Milligan's ineffective trials that. The electron has a charge equal to 1.60 x 10 -19 Coulomb electron has a mass of 9.11 x 10 -28 g • Goldstein discovered protons The results of Thomson Goldstein, Thomson has made information about the atom. the more he proposed that the atomic model •. Atoms are spherical •. Not the smallest atom But atoms are composed of electrons And other particles • Atomic particles are negatively charged electrons. Protons have a positive charge •. Atoms, protons and electrons are scattered evenly •. Electrically neutral atoms, because there are a number of positively charged ions from the atomic theory of Thomson. Atomic model resembles the picture looks plum pudding model of the atom, Rutherford model atom consists of a nucleus of protons and neutrons together in the middle of a dense nucleus is very small, very massive. And the positively charged electrons, which have a negative charge and very little mass. Running around the nucleus is broad. The discovery of the neutron Since most of the mass of an atom nucleus, a mass of protons, but the proton has a mass about half of its nucleus. The particles that have no electric charge but with a mass similar to the proton in the atom chat with James Vick British scientists. The study also found that electrically neutral neutrons. Atoms of any kind in the world, there is always a neutron. The atoms of hydrogen isotopes in the atomic model of Rutherford. Atoms consist of a nucleus, containing protons together in the middle. The nucleus is small But there are very massive and has a positive charge. The electrons have a negative charge. And with much less mass It runs a wide area around a nucleus of atomic theory. Rutherford Atomic model resembles the shape characteristic atomic model of Rutherford atomic model of Niels Bohr , scientists have attempted to study the nature of the electrons around the atom by divided into two parts, first the present study were related. the spectra of atoms This showed that the atoms have energy levels within the layers. Each floor is packed with electrons. The second part examines the energy oxidized rather Iona. To see that each electron energy levels are packed on a few series of the color spectrum means or lines of energy through the spectroscope. This makes the energy bar or a separate line. With wavelengths in order to Niels Bohr. Has proposed a model atom up. Summarized as follows: 1. The electron moves around the nucleus layer. Energy levels And each class has a unique power 2. Electrons near the nucleus is called the lowest energy level even more away from the nucleus. Energy levels will rise three. Electrons near the nucleus are called energy levels n = 1 energy level to the energy level n = 2, n = 3, ..., respectively, or a class K, L, M, N, O, P,. Q .... The atomic theory of Niels Bohr atomic model resembles the shape characteristic atomic model of Niels Bohr atomic model, the cloud is a model that scientists think is the most likely. The processing of the experimental data. After the atom Niels Bohr. Has proposed a model atom up. May be summarized as follows: 1. The electrons can not run around the nucleus with a certain radius. Sometimes close, sometimes far away. I can not tell the exact location. But if I can only find electrons, atoms and electrons within the fast-moving electrons, like so much in common. In this way, atom-called "cloud" 2. fog of electrons in various energy levels are shaped differently depending on the number of electrons. And energy levels of electrons 3. Fog with low energy levels of electrons in the atom the electron has a high energy level is so far the nucleus 4. Each electron energy levels is not in power any one fixed 5. Atomic energy levels of electrons are elementary particles of the atoms of elementary particles of atoms, each atom is composed of particles, protons, neutrons and electrons. The protons and neutrons inside the nucleus. This nucleus will occupy only a small area within the atom. And electrons around Nuclei at high speed Similar to a negatively charged group covered by the charged particles (units) capacitor (C), mass (g) Mass (amu) , electron -1 1.6 x 10 -19 0.000549 9.1096 x 10 -28 proton +1 1.6 x 10 -19 1.007277. 1.6726 x 10 -24 0 0 neutrons 1.6749 1.008665 x 10 -24 'electrons (Electron) the e - Carboniferous capacity is negative and much less mass 'proton p + symbol has a positive charge. And more massive than electrons (nearly 2,000 feet) 'Neutron charged symbol n is zero. And a mass much With protons and atomic mass number of the nuclear one. The number of protons in the nucleus, called the atomic number (Atomic Number, Z) 2. The sum of protons and neutrons is called the mass number (mass Number, A) A = Z + N, where N is the number of neutrons (mass number is. Integer and is close to the mass of an atom) to write the Nuclear write (A) at the top left of the symbol author (Z) at the bottom left of the symbol X = symbol of the elements.
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