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4 days ago · This video delves into Dalton's early life, his groundbreaking experiments, and the development of his atomic theory. I explain his five key postulates and their relevance today, supported by...
- 5 min
- Lets Learn Science with Dr. Smith
1 day ago · Modern atomic theory is not based on these old concepts. In the early 19th century, the scientist John Dalton noticed that chemical substances seemed to combine with each other by a basic unit of weight, and he decided to use the word atom to refer to these units as he thought they were indivisible in essence.
Here are the top 20 theories or concepts in chemistry that aren't always right or have limitations : Atomic Theory (limitations: doesn't account for subatomic particles) Periodic Table (limitations: doesn't include isotopes, anomalies in positioning)
1 day ago · Abstract. Yes, atoms are still there. We show that the inner electrons of H – and Li – behave almost as if the outer electrons were not present and that the effect of electron correlation is such that the outer loosely bound electron tries to stay as close as possible to the nucleus but without interfering too much with the electronic ...
5 days ago · Enrico Fermi, Italian-born American scientist who was one of the chief architects of the nuclear age. He developed the mathematical statistics for a large class of subatomic phenomena, explored nuclear transformations caused by neutrons, and directed the first controlled chain reaction involving nuclear fission.
- Lawrence Badash
1 day ago · Atomic theory The Bohr model of the atom, showing states of an electron with energy quantized by the number n. An electron dropping to a lower orbit emits a photon equal to the energy difference between the orbits
3 days ago · Class 11 Chemistry | Some Basic Concepts of Chemistry Part-2| Dalton's Atomic Theory |By Shikhar Sir---------------------------------------------------------...
