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Andrew and Jacob

Dear Jacob,

Hello my dearest friend. My name is Andrew and i live in Battambang Cambodia. I spend most of my spare time talking to peeps on the internet. I would like to help you with your project.

Associates: Your assigned atomic model is: Bohr
Dear Andrew,

Hey, my nam is Jacob and i live in Juno, Alaska. I spend most of my time outdoors hunting and playing football. I want to help you with this project.

Our model is Bohr. He states that the electrons outside the nucleus orbit the nucleus without being sucked in.The Bohr Model is probably familar as the "planetary model" of the atom illustrated in the adjacent figure that, for example, is used as a symbol for atomic energy (a bit of a misnomer, since the energy in "atomic energy" is actually the energy of the nucleus, rather than the entire atom). In the Bohr Model the neutrons and protons (symbolized by red and blue balls in the adjacent image) occupy a dense central region called the nucleus, and the electrons orbit the nucleus much like planets orbiting the Sun (but the orbits are not confined to a plane as is approximately true in the Solar System). The adjacent image is not to scale since in the realistic case the radius of the nucleus is about 100,000 times smaller than the radius of the entire atom, and as far as we can tell electrons are point particles without a physical extent. This similarity between a planetary model and the Bohr Model of the atom ultimately arises because the attractive gravitational force in a solar system and the attractive Coulomb (electrical) force between the positively charged nucleus and the negatively charged electrons in an atom are mathematically of the same form. (The //form// is the same, but the intrinsic //strength// of the Coulomb interaction is much larger than that of the gravitational interaction; in addition, there are positive and negative electrical charges so the Coulomb interaction can be either attractive or repulsive, but gravitation is always attractive in our present Universe.) With these conditions Bohr was able to explain the stability of atoms as well as the emission spectrum of hydrogen. According to Bohr's model only certain orbits were allowed which means only certain energies are possible. These energies naturally lead to the explanation of the hydrogen atom spectrum:

Bohr's model was so successful that he immediately received world-wide fame. Unfortunately, Bohr's model worked only for hydrogen. Thus the final atomic model was yet to be developed. The **Bohr model** of the [|hydrogen atom] ( //Z// = 1 ) or a hydrogen-like ion ( //Z// > 1 ), where the negatively charged [|electron] confined to an [|atomic shell] encircles a small positively charged [|atomic nucleus], and an electron jump between orbits is accompanied by an emitted or absorbed amount of [|electromagnetic energy] //h//ν. The orbits that the electron may travel in are shown as grey circles; their radius increases as //n//2, where //n// is the [|principal quantum number]. The transition depicted here produces the first line of the [|Balmer series], and for hydrogen ( //Z// = 1 ) results in a photon of [|wavelength] 656 nm (red).

Dear Jacob: Wow. That is some great information. Did you know that I live in Cambodia? It is very tropical here. So here is my research for today. Also, we may need to think about HOW we are going to build our model. I suggest styrofoam.

research: The element Bohr is probly fimilar as the "plentary model" of the atom illustrated in the adjacent figure the for exmple, is used as a symbol for atomic energy.