The concept of the atom that Western scientists accepted in broad outline from the 1600s until about 1900 originated with Greek philosophers in the 5th century bc. Their speculation about a hard, indivisible fundamental particle of nature was replaced slowly by a scientific theory supported by experiment and mathematical deduction. It was 2,000 years before modern physicists realized that the atom is indeed divisible and that it is not hard, solid, or immutable.
Shell-atomic-model-In-the-shell-atomic-model-electrons-occupyShell atomic model[Credits : Encyclopædia Britannica, Inc.]
Millikan-oil-drop-experiment-Between-1909-and-1910-the-AmericanMillikan oil-drop experiment[Credits : Encyclopædia Britannica, Inc.]
The-Bohr-atom-The-electron-travels-in-circular-orbits-aroundThe Bohr atom[Credits : Encyclopædia Britannica, Inc.]
Atomic-orbitals-Electrons-fill-in-shell-and-subshell-levels-inAtomic orbitals[Credits : Encyclopædia Britannica, Inc.]
Periodic-table-of-the-elements-showing-the-valence-shellsPeriodic table of the elements showing the valence shells.[Credits : Encyclopædia Britannica, Inc.]
Ionic-bond-An-atom-of-sodium-donates-one-of-itsIonic bond[Credits : Encyclopædia Britannica, Inc.]
Polar-covalent-bond-In-polar-covalent-bonds-such-as-thatPolar covalent bond[Credits : Encyclopædia Britannica, Inc.]
Nuclear-binding-energies-shown-as-a-function-of-atomic-massNuclear binding energies, shown as a function of atomic mass number.[Credits : Encyclopædia Britannica, Inc.]
Atomic model of electron configurations.[Credits : Encyclopædia Britannica, Inc.]
Atoms combine to form molecules by transferring electrons, which results in the formation of …[Credits : Acquired from Vast Video]
Learn about atoms, the building blocks of everything on earth.[Credits : Acquired from Vast Video]
Scientists discovered that great amounts of energy could be derived from uranium atoms because of …[Credits : Acquired from Vast Video]
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