Particle Physics

Pottential Difference between two things.

No because the law of conservation of matter clearly states that matter can NOT be created or destroyed. It can only change it's form.

2s.3s

I guess you could call him that. He does know a lot about science and always got very high grades, so I guess he is.

Thomson was experimenting with currents of electricity inside empty glass tubes.

That's not a question that can be answered. We do not know why there are three generations of fundamental particles, and so it stands to reason that we do not know what would be necessary for only one generation. I hypothesize that the constants and forces of nature would be entirely different, but this is making an assumption that our three generations of particles rely on the constants and forces of nature and I cannot prove my assumption.

The simplest answer, and by far the least satisfying, is I don't know.

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Its a matter of balance. With only a positively charged particle, everything would repel everything else and the universe would fly apart. With oppositely charged particles, some matter repels and some attracts. Of course, this does not consider the strong force, which is always attractive, nor does it consider the weak force, in which neutrons factor into the equation.

30 neutrons for the most stable isotope

Probably not, however the speed of the collision is important. You can generally push something with one hand to a force of about 100N so 20N isn't that much but might hurt at high speed. Maybe. A 20N force could be stopping a 1kg mass moving at only 1m/s, in 0.05 seconds. If you stop it with your head, I'm pretty sure it would hurt. If you stop it with your fleshy butt (no offense), it would take longer to stop, and the force would be less than 20N.

The first name was "corpuscles".

The time an electron stays in an excited state can vary depending on the specific electron transition and energy level involved. In general, electrons can stay in an excited state for fractions of a second to several hours before returning to a lower energy level by emitting a photon of light.

No.

The number of Valence electrons in the groups 3 to 12 is variable, and depends on the element that it is being bonded with.

For example:

If Iron (Fe) is going to form a compound with Sodium (Na), the Fe will act as though it has 7 valence electrons (i.e. it is willing two accept the one Na Valence electron).

No, they become positively charged, because electrons carry a negative charge, and by losing an electron they lose one of the charges that previously balanced out the positive charges from the protons, becoming a positively charged ion.

Yes, the neutron has a negative charge and a mass that is smaller than the mass of a proton.

An atom is formed from:
- protons with a positive electrical charge
- neutrons which is neutral
- electrons with a negative electrical charge
Only the electron is a fundamental particle.

If an atom has a surplus of electrons, it becomes negatively charged and is called an anion. This additional electron(s) causes the atom to be more reactive as it seeks to get rid of the extra electrons to achieve stability.

Pretty much any element is identified by its atomic number or number of protons; in the case of beryllium it has four of them in its nucleus. It's somewhat a matter of convention that it is beryllium by definition so long as it has those four protons; any element might be in a different oxidation state having gained or lost electrons, or be a different isotope by varying the number of neutrons, but the atomic number or number of protons is used to identify elements.

Electrons move around the atomic nucleus.

Yes. An electron is negative

Molecules are not part of a quark, quite the reverse.
Quarks are theoretical particles that make up, in various combinations, subatomic particles such as protons and neutrons.
Protons, neutrons and electrons make up atoms of elements in their various combinations.
Atoms of elements make up molecules in their various combinations.

hi

it is a combination of Be/Po210 . po210 emits an intensive alfa radiation and when this radiation contact with Be metal foil, the result would be neutron. as you know neutron is critical element to make chain fission reaction .so in practice a very thin gold foil can stop alfa radiation but if an explosion mix po210 with Be, we will have a high intense neutron source can trigger a ultimate fission bomb. a good design of initiator help to make a smaller and effective bomb with high yeild. the size of an initiator would be a grape size.

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no, it has three p electrons

1/1836 the mass of a proton