A nucleus made of protons and neutrons surrounded by a cloud of electrons equal in number to the protons.
2
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2answers
283 views
Electrical neutrality of atoms
How is it that atoms with equal numbers of protons and electrons are described as "electrically neutral" when the proton is 1,800 times more massive than the electron?
5
votes
4answers
664 views
Is there the smallest particle that can be guaranteed to be unable to be broken down into smaller particles?
Is there the smallest particle that can be guaranteed to be unable to be broken down into smaller particles?
5
votes
1answer
482 views
Open shells in Quantum mechanics of multielectron atoms
This question: How do electron configuration microstates map to term symbols?
And the discussion of multielectron effects here: Quantum Computing and Animal Navigation
Inspired me to try to understand ...
1
vote
3answers
275 views
Is it possible to bind an entangled electron to the outer shell of an atom or just a proton?
Say we start with an entangled electron--positron pair and we separate them. I want to take the entangled electron and bind it to a proton or the outer shell of an atom.
Is it possible to do this ...
4
votes
3answers
1k views
Photon hitting an atom with higher energy than needed to ionize
Suppose we have an atom with several energy levels (e.g. an hydrogen), and it is hit by photons.
I know that in order to have the atom change energy levels, the photon must have an energy level ...
8
votes
2answers
7k views
What is in the space between a nucleus of an atom and its electrons?
There is a common analogy about the structure of an atom, such as the nucleus is a fly in the centre of a sports stadium and the electrons are tiny tiny gnats circling the stadium (tip of the hat to ...
9
votes
4answers
738 views
Why does amount of protons define how matter is?
My question might sound convoluted but my mind is twisting right now so my apologies in advanced.
Why is it that when I have one proton and one electron it is Hydrogen a clear flammable gas, and ...
1
vote
1answer
356 views
Scaled energy output of a hydrogen atom
I'm trying to get a grasp of the power within a single hydrogen atom (e.g. the power released when whatever process happens in a hydrogen bomb)... If we could enlarge a hydrogen atom up to the size of ...
3
votes
2answers
1k views
How does electron excitation relate to atomic orbitals?
Taking off from the Rutherford-Bohr model,
Figure 1. Rutherford-Bohr model.
when an electron absorbs energy (from light, heat, or otherwise) it jumps to a higher energy level, or shell. Then when ...
2
votes
3answers
4k views
Why is the relationship between atomic number and density not linear?
What are the factors that affect the density of an atom?
4
votes
2answers
2k views
Zero probability of finding an electron in the nucleus
One and the same electron in a p orbital and taking part in a common π (pi) bond has two lobes visualized as connecting through the nucleus. There is however zero probability of finding an electron at ...
5
votes
2answers
2k views
How does electron move around nucleus?
I need to get a nice picture about how electron moves around nucleus? I find concept of probability and orbitals quite difficult to understand?
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votes
2answers
70 views
Is there a [set of] rules/patterns that apply to elements [duplicate]
Possible Duplicate:
Do current models of particle physics explain the chemical properties of elements/compounds?
Is there a rule/pattern, or multiple rules and/or patterns, which describe ...
21
votes
6answers
2k views
Why does space expansion not expand matter?
REFORMULATED:
I have looked at the other questions (ie "why does space expansion affect matter") but can't find the answer I am looking for.
My question:
There is always mention of space expanding ...
14
votes
1answer
467 views
Turned to steel in the great magnetic field
This is obviously a "fun" question, but I'm sure it still has valid physics in it, so bear with me.
How great of a magnetic field would you need to transmute other elements into iron/nickel, if ...
9
votes
5answers
2k views
Which experiments prove atomic theory?
Which experiments prove atomic theory?
Sub-atomic theories:
atoms have: nuclei; electrons; protons; and neutrons.
That the number of electrons atoms have determines their relationship with other ...
1
vote
2answers
790 views
Appearance of atoms
I was watching a documentary entitled "The Atom" and one of the statements made was that Atoms behave differently when we look at them. I wasn't too sure about the reasoning behind this and i'm hoping ...
16
votes
7answers
2k views
Is mass quantized?
I learned today in class that photons and light are quantized. I also remember that electric charge is quantized as well. I was thinking about these implications, and I was wondering if mass was ...
