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How were atomic models developed given that no one had seen an atom?
Wiki User
∙ 11y ago
The first models of atoms were made by Ancient Greeks entirely based on guesswork. They were wildly wrong.
Today's models are confirmed by important tests that can show things that we cannot see by examining things that we can see. Imagine you are standing in a park and you see a very long shadow that is boxy. You then look at your shadow and see that it conforms relatively to your body, but is only half as tall as you are. You can reasonably confirm that the object casting the long shadow is also twice as tall as its shadow is very likely rectangular in shape. You do not have to turn around and see that it is a tower for you to know that it is a tower by the shadow it creates.
Some methods of verifying atomic models include: radiation testing, mass and light spectroscopy, creation of plasmas and Bose-Einstein condensates, the Theory of Relativity, particle-wave duality proofs, harmonic resonance, etc.
Wiki User
∙ 11y ago
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What is the atomic mass unit of protons and neutrons?
atomic number or atomic mass
What the distinction between atomic mass and atomic number?
the number of positive charges or protons in the nucleus of an atom of a given element, and therefore also the number of electrons normally surrounding the nucleus. (atomic number) The mass of a given atom or molecule, expressed in atomic mass units. (atomic mass)
The name given to the atomic particle found outside the nucleus of an atom?
you
The atomic number of an element tells the?
atomic number tells us the number of protons and electrons in the given atom. As Atomic No. = no. of protons = No. of electrons
What is the difference between the atomic number and atomic mass?
The atomic number is the number of protons in an atom of an element, while the atomic mass is the mass of protons and neutrons of a specific isotope of a given element.
What is the need of atomic models?
Atomic models tell us about the structure of an atom which is based on what we know about how atoms behave. But it is not necessary that it will be a genuine picture of the structure of an atom.
What warnings were given to the Japanese about the atomic bomb?
There were no warnings. The Manhattan Project was a secret. This was the name of the research project that developed the atom bomb.
A given atom of calcium has an atomic number of 20 and an atomic weight of 42 This atom has?
22 neutrons.
What is bohr atom?
Bohr developed an atomic model with shells.
How is the term atomic number defined for a given atom or isotope?
Atomic Number is the number of protons that an atom has. The atomic number is different for each element.
Who wrote an atomic theory that laid the groundwork for later models of the atom?
John Dalton
What is the atomic mass unit of protons and neutrons?
atomic number or atomic mass
What information about the subatomic makeup of an atom is given by the atomic number?
The number of protons in the nucleus of the atom.
What the distinction between atomic mass and atomic number?
the number of positive charges or protons in the nucleus of an atom of a given element, and therefore also the number of electrons normally surrounding the nucleus. (atomic number) The mass of a given atom or molecule, expressed in atomic mass units. (atomic mass)
What happened prior the First Atomic Blast in 1945?
Scientists developed the atom bomb.
The name given to the atomic particle found outside the nucleus of an atom?
you
Who is model of the atom has no subatomic particles?
Both Democritus' and John Dalton's atomic models had no subatomic particles.
