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.

3
votes
0answers
32 views

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: ...
3
votes
1answer
51 views

Instability due to neutrons

Why does an excess of neutrons leads to instability? For example, both $\ce{^{3}H}$ and $\ce{^{4}H}$ are unstable, with respective half-lives of $3.89\cdot 10^8$ and $1.39\cdot 10^{-22}$ seconds. ...
-1
votes
1answer
112 views

How does protium fusion produce helium? [closed]

In stellar nucleosynthesis, how is helium produced from a protium atom that has no neutrons?
3
votes
2answers
77 views

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-...
0
votes
0answers
64 views

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_\...
0
votes
1answer
52 views

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 ...
32
votes
4answers
14k views

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 ...
1
vote
1answer
116 views

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 ...
0
votes
2answers
2k views

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 ...
7
votes
2answers
3k views

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 ...
5
votes
1answer
11k views

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?
0
votes
1answer
50 views

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 ...