relates to the dynamics and processes that occur within and interactions between the nuclei of atoms.

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243 views

The effects of adding neutrons to an atom

So neutrons are neutral in terms of charge, and adding neutrons to an atom affects its atomic mass. But when neutrons are added to the nucleus, the nuclear radius would be affected. Couldn't that ...
1
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2answers
69 views

Rutherford gold foil experiment

This question may sound silly. What actually I understood from this experiment is that the positively charged nucleus which is in the center is responsible for the bending and reflection of the alpha ...
1
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0answers
19 views

trying to understand stellar nucleosynthesis [closed]

Trying to create a periodic table that shows "where" elements are made. For example big bang, cosmic rays, stars, supernovae etc...but reading a lot about gold,and other heavy neutron rich elements, ...
0
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1answer
90 views

Why radioactive elements emit alpha beta and gamma rays

I am confused about this that why radioactive elements emits alpha beta and gamma rays WHILE other elements can't do so.
3
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1answer
110 views

Nuclear Fallout [closed]

If there was a nuclear explosion and years later I come out of a fallout shelter like in the popular game series Fallout, what elements would react to the radiation in a way that could harm humans and ...
2
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2answers
2k views

Is iron the most stable element in the periodic table?

According to the binding energy per nucleon vs mass number graph, it is observed that iron-56 has the maximum value of binding energy per nucleon (8.75 MeV).It means that Iron-56 is the most ...
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1answer
132 views

Find the mass of protons, neutrons, etc

Use the oxygen to describe how atom is built. There has to be the amount of charges, mass of isolate, mass of charge. My approach: Protons: 8 Mass of the material: 16 Neutrons: 8 Electrons: 8 ...
5
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1answer
228 views

Are photons ejected from atomic nuclei?

I have heard that electrons absorb or eject photons when transitioning from one orbital to another. Is this correct? Can atomic nuclei eject photons?
11
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2answers
299 views

Radical formation via tritium to helium decay

Following on from this question about tritium water, I was wondering whether the decay of tritium to helium-3 has ever been used in organic synthesis. Such a transition would presumably result in no ...
2
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1answer
488 views

Why is Tin-112 stable, but indium-112 radioactive?

According to Wikipedia, Tin-112 is a stable nuclide, but indium-112 is radioactive (half-life only 14 mins). What is the explanation for this?
5
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1answer
342 views

Isn't the mass of a carbon 12 equal to a mass of 6 neutron + 6 proton + 6 electron?

The mass of Carbon 12 is 12u from definition, and is formed with 6 neutron, each with 1.0087u, 6 proton, each with 1.0072u and 6 electron, each with 0.0005u, which all add up to 12.0894u. why is there ...
4
votes
1answer
202 views

What chemical elements does a nuclear explosion release into its mushroom cloud?

I'm interested in the mushroom cloud produced by a nuclear explosion: What is it made of? I know that the uranium fission reaction is the following (from this web page) $$\ce{{}^{235}U + {}^1_0n ...
0
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1answer
388 views

Can we make Gold in a Lab? [duplicate]

Can we make Gold in a Lab? Is it possible to make changes in metals that will create Gold? and How? I have tried to search something related to this but didn't get any good results. Thanks in Advance
2
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1answer
117 views

Why doesn't the atomic number change by two in the process of production of Americium?

Looking at the bomardment of uranium-238 this is what I see. First, I see a uranium-238 atom with 92 protons bombarded with a neutron. The neutron then undergoes beta decay into a proton. So we ...
4
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1answer
2k views

Why neutrons are neutral?

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?
4
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3answers
189 views

How are nuclei stable?

We all know that the density of the nucleus is very high. Nuclei are made up of protons and neutrons, and while protons have the same charge, they are closely packed in a nucleus. How does the ...
-1
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3answers
132 views

Beta Decay - Doesn't Add Up [duplicate]

The definition of Beta Decays is as follows Electron comes out. Example as follows: $$\ce{^131_53I -> ^131_54Xe + e^-}$$ So Iodine forms Xe and releases one electron with a -1 charge only and ...
2
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2answers
498 views

Nuclear power: what material is the control rod made from?

My question: What type of material is used in the control rod of a nuclear reactor? (Nuclear power plant)
6
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2answers
173 views

What is the reason behind choosing the specific elements used for the synthesis of heavier elements?

Attempts to synthesize still undiscovered elements This is derived from the wiki page: "extended periodic table" and is one of the many examples d or f block elements are used in ...
1
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2answers
112 views

A paradox in the philosophy of instability

The heavier the atom, the more unstable it gets, right? That is not true about Uranium and we know it. I wondered why. A brief explanation stated that since more neutrons are there in the nucleus ...
11
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1answer
776 views

If radium has such a long half-life, how can radon possibly be a threat to us?

If the probability is so low that a radium atom will decay into radon at any given time (the half-life is over 1600 years), then there will be a low amount of radon produced, granted it will be ...
4
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3answers
1k views

What is the difference between nuclear fission and nuclear fusion?

I always mix up the definition of nuclear fission and nuclear fusion. So, what is nuclear fission and nuclear fusion, and an example for each?
2
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1answer
89 views

Why does radioactive decay occur?

Is there a reason radioactive decay is exponential, as in after an extremely long time some of the original compound remains, or is this just an empirical model? Also, why does $\ce{^{238}U}$ have a ...
0
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1answer
71 views

Do elements actually transmute in nuclear reactions?

Whenever a nuclear transmutation happens, do we get a new element or do we have the same element with chemical properties of a different element? Isn't it very much against the intuition?
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1answer
55 views

“Orthogonality” of chemical elements

Chemical elements are said to be immutable at normal energies, but not at the energies that are orders of magnitude higher. Given that nucleus at normal energies gives us the Periodic Table and at ...
5
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3answers
446 views

Conversion of one atom to another to get the element of the latter atom in abundance

One child who is in 9th standard has claimed to have find a solution to all practical physical problems. On asking for details, he said that all periodic elements has common components, i.e. ...
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3answers
64 views

Radioactivity and Kinetics of disintegration

Well I've just started on kinetics and there are a few things I am absolutely confused about! First of all , is neutron actually made up of a proton and electron? if yes then how is it possible? In ...
0
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1answer
60 views

How long must a sample be irradiated before all 59-Co atoms are converted to 60-Co? [closed]

For the interaction, n$^0$ + $^{59}$Co $\to$ $^{60}$Co
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1answer
50 views

Interpret Radiodecay Symbolism

$\binom{16}{8}$O (n,$\alpha$)$\binom{13}{6}$C and $\binom{9}{4}$Be ($\alpha$,n)$\binom{12}{6}$C I had initially thought the products & reactants may be O-16 $\to$ C-13 + He-2 + p$^+$ from alpha ...
11
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3answers
3k views

Turn lead into gold via radioactive decay

I was looking at the isotope's table and noticed that one of Lead's isotopes can actually turn into stable gold through this mechanism : ...
11
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1answer
3k views

Why can't light pass through a gold foil, but alpha particles can?

Rutherfords experiment showed that most of the alpha particles passed through a thin gold foil undeflected. So why can't light pass through the foil, which is supposedly thinner than the heavy alpha ...
5
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4answers
2k views

Can a proton be ejected from an atom?

Consider a neutral atom that has $n$ protons and $n$ electrons. Is it possible to remove a proton from the atom via some technique such as bombardment with another particle or applying an appropriate ...
2
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1answer
882 views

Why isn't Neptunium used in nuclear reactors in nuclear power plants?

Why isn't Neptunium used in nuclear reactors in nuclear power plants? Uranium is, and Plutonium is. But Neptunium isn't and it is in the middle of them. Is it like it is too hard to make it do ...
5
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3answers
140 views

Can there be a reaction in which nuclear fission or fusion takes place along with atomic recombination?

Can a nuclear reaction occur along with a chemical reaction involving bond formation? Can anyone suggest an example of this, please?
0
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1answer
40 views

Find ratio of number of atoms of $A$ and $B$

However I am thinking of this question to be damn easy but still I'll not say as I am not getting it, There are two radio nuclei $A$ and $B$. $A$ is $\alpha$ emitter and $B$ is $\beta$ emitter ...
0
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1answer
80 views

Final amount of Hg present after $\beta$ decay

I have been trying to solve an exercise of Nuclear Chemistry, well I was not sure that whether I should I ask this on physics or chemistry but I think that if chemistry had an exercise based on this ...
7
votes
3answers
459 views

Understanding Beta Decay

Reading Wikipedia on "Beta Decay" they list the equation of Carbon-14 decaying into N-14. see equation https://en.wikipedia.org/wiki/Beta_decay I presume the 14 refers to total protons and neutrons. ...
2
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1answer
520 views

Is it possible to compress an atom to infinite density?

I know, by nature, normally atoms are stable. But I wonder, if it is possible to compress an atom, say the Hydrogen atom, to infinite density by applying external force? After all, electrons and ...
4
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2answers
290 views

What is a product of water ionization?

I've read that radioactive compounds are dangerous because they emit electromagnetic waves (gamma-radiation, ...),.. that are dangerous for living organisms because they can ionize atoms in molecules. ...
2
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1answer
36 views

Are the electrons also distributed for the alpha decay?

Consider this reaction of alpha decay: $$ \ce{^{222}_{88}Ra -> ^{218}_{86}Rn + ^4_2 He} $$ My question is, whether or not the electrons also get distributed in the reaction like the nucleons?
24
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2answers
2k views

The last element's atomic number

I was just thinking what can be the last atomic number that can exist within the range of permissible radioactivity limit and considering all other factors in quantum physics and chemical factors.
1
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2answers
625 views

Where do the electrons that are released in the sun go?

I've heard that electrons are released from the clutches of nuclei in the plasma state that is present in the sun. My question is: Where do these electrons go? Do they go to the product nuclei of the ...
2
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2answers
180 views

Notation of Beta decay

Is it an ion or a neutral atom that is created through Beta decay? For example: $_6^{14}\mathrm C \to ~ _7^{14}\mathrm N + \mathrm e^- + \mathrm{v{_e}}^{-}$ Isn't $_7^{14}N$ an ion since neutron ...
1
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3answers
792 views

In nuclear chemistry, how does a neutron split to form a proton and an electron?

I'm studying radioisotopes at the moment and balancing nuclear reactions isn't making sense in that more matter is coming out of the equation in negative β decay equations : ...
0
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1answer
89 views

New technology that has replaced the old radioisotope

What technology has the radioisotope Cobalt 60 replaced in medicine? E.g.,PET preferred over CT scans
0
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2answers
56 views

A function for getting the nuclide's nuclear binding energy?

Is there a function $f(A)$ or $f(Z, A)$ that gets the energy of nuclear binding of one nuclide in atom? Or other way to get it? My chemistry book says only to get it from the chart which is very ...
2
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1answer
310 views

What does HTO decay into?

I'm aware that tritium undergoes beta decay forming Helium-3. But in the case of HTO, what does it decay into? I don't suppose it decays into HeHO.
4
votes
2answers
11k views

Nuclear fusion reactions violate law of conservation of mass, but it has not yet been taken into account. Why?

According to the law of conservation of mass, during any physical or chemical changes, the total mass of the products is equal to the total mass of the reactants. But in nuclear fusion reaction if ...
4
votes
1answer
217 views

What is advantage of creating elements that disappear in a flash?

More than dozen of heavy elements of periodic table do not occur naturally but are prepared artificially at nuclear reactors.. These elements are said to disappear in a flash.. So, why invest lot of ...
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2answers
545 views

Do the names of some elements have anything to do with Planets?

There are elements like Neptunium and Plutonium in the periodic table. Did their discovery have anything to do with Neptune and Pluto? Or are they randomly assigned with such names?