At first we didn't now that the atom existed. It was Einstein who discovered that pollen grains were moving in a glass of water. Why? It was because as he later confirmed that the water particles were pushing it in an unbalanced way. Other scientists later discovered that there are protons, neutrons and electrons in an atom.
The model of the atom has changed over time as new experimental evidence and advancements in scientific theories have provided a better understanding of the structure and behavior of atoms. Early models were simple and did not explain many observed phenomena, leading to revisions and the development of more sophisticated models such as the Bohr model and the quantum mechanical model._ADV
The theory of malleable intelligence suggests that intelligence is not fixed and can be developed or changed over time through learning, practice, and experience. This theory challenges the idea of intelligence being solely determined by genetics and highlights the potential for individuals to improve their cognitive abilities through effort and perseverance.
Erwin Schrodinger invented the model of the atom based on research done by scientists such as Niels Bohr.
A neutral atom of xenon has 6 energy levels, with 54 electrons occupying those levels. Xenon has 54 electrons in total, so no electrons would be left over in a neutral xenon atom.
If the atom's outer boundary is established by the "mean radius of the outermost electron orbital" or something like that, the atom is waaaaaaaaaaay over 99% free space. The hydrogen atom has a diameter over 100,000 times the diameter of the proton in it's nucleus.
it has just changed
Our idea of the atom has changed over time as new experimental evidence and theoretical advances have been made. Early models were based on limited information and as technology improved, we discovered more about the structure of the atom. Each new model built upon the shortcomings of the previous one, leading to our current understanding based on quantum mechanics.
the atom model
it was developed by many scientists over many decades. *apex*
it was developed by many scientists over many decades. *apex*
the egyptians developed nukes
the egyptians developed nukes
the egyptians developed nukes
the egyptians developed nukes
the egyptians developed nukes
the egyptians developed nukes
the egyptians developed nukes