Chemistry Stack Exchange
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Questions tagged [protons]

Protons are subatomic particles with the symbol p or p+. They have a positive electric charge of 1 elementary charge. Questions referring to interactions of protons in solutions should rather use the acid-base tag.

Protons are subatomic particles with the symbol $p$ or $p^{+}$. They have a positive electric charge of 1 elementary charge.

The nucleus of every element consists of protons and the number of these protons are referred to as its atomic number. There are also neutrons present in the nucleus. Both are usually referred to as nucleons. The main mass of an atom (or ion) comes from these.

The term proton is also often used for the positively charged Hydrogen ion $\ce{{}^{1}H+}$.

A proton itself consists of two up quarks and one down quark and it is also a fermion.

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Protons and the Heisenberg principle

The Heisenberg uncertainty principle implies that it is not possible to calculate the position and velocity of a body at the same time accurately. Electrons follow this principle since their orbitals are just probabilities where they may occur. But…
anonymous789
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Will adding up protons and electrons (without neutrons) create a new element?

If protons have a positive charge and electrons have a negative charge, can we add up several protons and electrons together to create a new element, without adding neutrons to hold the nuclei together?
soundslikefiziks
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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 amount of energy to the system?
Murtuza Vadharia
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Why weren't the electrons attracted to doubly charged Helium particles in the Rutherford experiment?

I have a chapter and in it there was a topic on the Rutherford experiment. It is written that doubly charged helium particles or alpha particles were thrown towards a very thin gold foil and some of the alpha particles where bounced back because…
anni
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How does one find the probability of tunneling along a reaction coordinate computationally?

The idea for this question comes from Jan's comment over here. I realized I don't know how I would compute the probability of tunneling in the process of a reaction. When I say "compute" I don't mean something rather trivial like finding the…
jheindel
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Does H3O+ donate a H+ to Water?

Does the hydronium ion donate a proton to water? If the collision of 2 molecules of water can cause a proton to be transferred, does hydronium 'pass' a proton to water?
William Luderman
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Can it be said that on our planet we have roughly the same number of electrons as we have protons?

My question is quite simple I think. Is it true that we have approximately the same number of electrons as we have protons and the average electric charge of the molecules in our planet is roughly neutral?
yoyo_fun
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Proton leak during ATP synthesis

I was told there is a proton leak during ATP production. When going through the mechanisms we went over in class, I was unable to find when this occurs. During what part of ATP production is there a proton leak and what are the ramifications of…
Melanie Shebel
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What is the proton NMR spectrum of p-methoxyphenol?

I think there will be two pairs of doublets, since the hydrogens adjacent to the $\ce{OCH3}$ and those adjacent to the $\ce{OH}$ group will be in different environments. The answer, however, is that there'll be a singlet for 4 Hydrogens. To give…
John
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Comparing energies of isoelectronic species, but one protonated

Let's say we have the following reaction: $$\ce{RH -> R- + H+}$$ By modelling it using quantum chemical calculations in the gas phase I would make calculations for both $\ce{RH}$ and $\ce{R-}$, but $\ce{H+}$ has no electrons. On the other hand,…
schneiderfelipe
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How were the absolute masses of atoms calculated before the mass spectrometers?

I understand that true (non-relative) masses of atoms are calculated with a mass spectrometer. using this relationship: Centripetal Force = Force due to magnetic field(B) But I was wondering how masses of atoms were calculated before the mass…
Arman47
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Why is it that protons and electrons undergo the same amount of deflection in an electric field if they have the same energy?

The question I have is with respect to this diagram. Which depicts a stream of protons and electrons entering a proton field with equal energy. Why is it that in the case where the energy of protons and electrons are equal, their angle of…
user104941
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Quotable Literature for the Enthalpy of a Proton

A proton obviously has no electronic energy, no vibrational and no rotational degrees of freedom. Therefore I think it is fair to assume, that $$H(\ce{H+})=\frac32\cdot \mathcal{R}\cdot T$$ holds for the translational degrees of freedom. I am…
Martin - マーチン
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How do the odd proton-number elements originate?

I have a question about the origin of the odd proton-number elements in the periodic table, please. As it is generally thought that the big bang produces hydrogen first, and then hydrogen combined to form helium. Helium combines into beryllium, and…
user120456
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Using a H NMR spectrum to determine the structure of a protein supplement

This question is about the H NMR spectrum of creatine. Creatine is a supplement taken by athletes to increase body mass. Recently, supplements containing derivatives of creatine have been marketed. These are usually more lipophilic in an attempt to…
rdx
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