Questions tagged [neutrons]

For questions specifically about neutrons - subatomic particles denoted by the symbol n. They have no net electric charge. Also see [radioactivity]. Also use [atoms] if your question is not specifically about neutrons.

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Is there a good citation for the impact of inelastic neutron scattering on the measurement of the intramolecular geometry of H2O?

I have tried to find a good citation for the experimental measurement of the intramolecular geometry of H2O in the liquid phase and come across a problem: It seems that the method of choice for such a ...
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Neutron–proton ratio and isotope stability

I have studied that most of the isotopes (not all of them!) with a neutron–proton ratio of $\ge 1.5$ are unstable; but it is obvious that this is not true in some cases like carbon-14 or technetium-99....
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What is the mass of a proton?

My textbook explains that the deviation from integer atomic mass is caused by mass difference between proton and neutron, which are $1.67262·10^{-27}$ kg and $1.67493 ·10^{-27}$ kg, respectively. If ...
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Why do neutron scattering lengths vary seemingly randomly with atomic number?

I'm a bit unclear as to what determines neutron scattering lengths, and hence why they can vary so much even between adjacent elements like Fe and Co. I gather it's related to resonant scattering, but ...
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Why is atomic number is more or less the same as number of neutrons for light elements?

In periodic table, the atomic weight is more or less twice the proton number. Do neutrons naturally tend to be in similar quantity as protons? I know atomic weight weighted average of isotopes but why ...
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If D₂O (Deuterium Oxide) in large quantities, is exposed to explosive amounts of Neutrons or Protons, can it possibly go Nuclear? [closed]

If you exposed large amounts of Protons or Neutrons to Deuterium Oxide, could it possibly explode or implode. Im basing this off a Chemical Simulation, in which simulated Protons are exposed to ...
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Why does radioactive matter decay in series of half-lives?

I was studying types of nuclear decay, and I came across the concept of "half-life". And I started wondering why does nuclear matter decay in half-lives? In other words, why does the rate of nuclear ...
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Characteristics of Isotopes [closed]

I'm currently applying information theory to physics, and have begun considering the nature of isotopes, and in particular, how much information is contributed to the properties of an element by its ...
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Can neutrons be ejected from an atom?

In a neutral atom, can neutrons be ejected, and if so, by what (nuclear) process or reaction? I have read Neutron emission and Can a proton be ejected from an atom, but I don't understand how and if ...
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Where do the electrons come from to make the carbon stable during bombardment of alpha particles on beryllium

When beryllium is bombarded with alpha particles, where do the electrons come from to make the carbon stable? Source: https://en.wikipedia.org/wiki/Triple-alpha_process
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What is "detwinning" as a 2D crystallography technique?

The Phys.org article Iron selenide revealed as 'garden-variety iron-based superconductor' is quoted below. Normally I would hesitate to quote so much but in this case it all seems germane. Question: ...
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How does protium fusion produce helium? [closed]

In stellar nucleosynthesis, how is helium produced from a protium atom that has no neutrons?
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Atomic weight = expected weight?

The atomic weight of an element, is it accurate to say that another way to think of it is the expected value of that element's weight if we were to sample one at random from the environment? Are man-...
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Is neutron a compressed form of hydrogen atom?

As I know: $E_\mathrm{p} = \pu{938.272 MeV}, \quad E_\mathrm{e} = \pu{0.511 MeV}, \quad E_\mathrm{n} = \pu{939.565 MeV}$ $E_\mathrm{n} − (E_\mathrm{p} + E_\mathrm{e}) = \pu{0.782 MeV}$ $M_\...
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discover of the neutron, what happen to 2+ charge

James Chadwik found the neutron by shoot α rays to a Beralium foil. α rays are equal to the He²⁺ and he saw that particles without a charge is out from that. He understood the neutrons are those ...
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What roles do neutrons play in an atom?

An atom typically consists of electrons, protons, and neutrons. Electrons are negatively charged and participate in bonding to stabilize the atom. Conversely, protons are positively charged and ...
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Consequences of a neutron decay (beta radiation) and reasoning for an electron capture

I came about the following doubts (extremely comprehensive in nature) in a logical sequence, so I have made it a point to explain either in full detail and then proceed to the interrelation between ...
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Is Neutron radiation considered electromagnetic wave?

I'm confused because gamma rays are classified as an electromagnetic wave. But why is neutron radiation not considered electromagnetic wave? I know Alpha and Beta, as well as positron and proton, is ...
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Why is there no neutron in protium?

My chemistry teacher once told me, that every atom should have at least as many neutrons as protons, to keep the electrons from crashing into the nucleus. Protium, however, doesn't even have ...
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Why neutrons are neutral? [closed]

If electrons have a negative charge and protons have a positive charge then how come neutrons have zero charge without consisting of protons and electrons?
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Z:#Neutrons Ratio

Is there a fixed ratio that can be used to calculate the number of neutrons in the nucleus of the most stable isotope of an element by knowing the atomic number? Side question: if Z is the symbol for ...
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