Question

Describe at least two changes that occurred to the atomic model over time, along with the experimental evidence that made these changes necessary.

Help pleasee

Answer 1

Explain why the quantum number set (3, 3, -2, +½) is not possible for an electron in a ground-state atom.

Answer 2

Explain what each quantum number in a quantum number set tells you about the electron. Compare and contrast the locations and properties of two electrons within an atom that have the quantum number sets (3, 2, -1, +½) and (3, 1, -1, +½).

Answer 3

@e.mccormick @Preetha @e.cociuba help! i will give you a medal

Answer 4

@chmvijay

Answer 5

@znimon help please

Answer 6

Bohr model, introduced by Niels Bohr in 1913, depicts the atom as small, positively charged nucleus surrounded by electrons that travel in circular orbits around the nucleus—similar in structure to the solar system, but with attraction provided by electrostatic forces rather than gravity

The plum pudding model of the atom by J. J. Thomson, who discovered the electron in 1897, was proposed in 1904 before the discovery of the atomic nucleus in order to add the electron to the atomic model. In this model, the atom is composed of electrons (which Thomson still called "corpuscles", though G. J. Stoney had proposed that atoms of electricity be called electrons in 1894[1]) surrounded by a soup of positive charge to balance the electrons' negative charges, like negatively charged "plums" surrounded by positively charged "pudding"

Schrodinger and Heisenberg Model

There is a key point about the Bohr model that is no longer accepted in current models of the atom. In the Bohr model, the electrons are still thought to orbit the nucleus just like planets orbit the sun. Actually, this is something that we can not say is true. The problem with atoms and electrons is that we humans except them to obey the same rules as things like baseballs and planets. Actually, the rules are the same, but baseballs and planets follow the rules of quantum mechanics without us humans even noticing.

Erwin Schrödinger built upon the thoughts of Bohr yet took them in a new direction. He developed the probability function for the Hydrogen atom (and a few others). The probability function basically describes a cloud-like region where the electron is likely to be found.

Answer 7

thank you @znimon but could you help me with this question?

Explain what each quantum number in a quantum number set tells you about the electron. Compare and contrast the locations and properties of two electrons within an atom that have the quantum number sets (3, 2, -1, +½) and (3, 1, -1, +½).