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Why do heavy elements neclei contain proportionally more neutrons than light element nuclei?
It is for this reason that large nuclei contain proportionally more neutrons than light elements
How was neutron discovered?
neutron, uncharged elementary particle of slightly greater mass than the proton. It was discovered by James Chadwick in 1932. The stable isotopes of all elements except hydrogen and helium contain a number of neutrons equal to or greater than the number of protons. The preponderance of neutrons becomes more marked for very heavy nuclei. A nucleus with an excess of neutrons is radioactive; the extra neutrons convert to protons by beta decay (see radioactivity). In a nucleus the neutron can be stable, but a free neutron decays with a half-life of about 17 min (1,013 sec), into a proton, an electron, and an antineutrino. The fact that the neutron possesses a magnetic moment suggests that it has an internal structure of electric charge, although the net charge is zero. The electron-scattering experiments of Robert Hofstadter indicate that the neutron, like the proton, is surrounded by a cloud of pions; protons and neutrons are bound together in nuclei by the exchange of virtual pions. The neutron and the proton are regarded by physicists as two aspects or states of a single entity, the nucleon. The antineutron, the neutron's antiparticle, was discovered in 1956. The neutron, like other particles, also possesses certain wave properties, as explained by the quantum theory. The field of neutron optics is concerned with such topics as the diffraction and polarization of beams of neutrons. The formation of images using the techniques of neutron optics is known as neutrography. See D. J. Hughes, Neutron Story (1959); K. H. Beckurts and K. Wirtz, Neutron Physics (tr. 1964); P. Schofield, The Neutron and Its Applications (1983).
Has chemical analysis of lunar rocks shown that chemical elements not listed in the periodic table exist on the moon?
No, elements are defined by the number of protons they have and the periodic table contains all the elements up to over 100 protons, much past this point they become very unstable and radioactively decay into lighter (less protons in the nucleus) atoms. Elements this heavy do not occur naturally so we would not find them on the moon.
Do protons and neutrons have nearly the same mass?
No, the proton and neutron don't have the same mass. A neutron is about 1.00138 times as heavy as a proton. The neutron is just a bit bigger, as you can see, and when a free neutron decays, it releases a proton and an electron. It might be said that a proton plus an electron equals a neutron, but you might not be able to get a physicist to say that. Links can be found below for more information.
How many neutrons electrons and protons are in deuterium?
Deuterium, also called heavy hydrogen, is a stable isotope of Hydrogen.The nucleus of deuterium is called a deuteron, contains ONE proton and (typically for the deuterium isotope) ONE neutron, whereas the far more common hydrogen nucleus contains no neutron.Both contain ONE electron in the 1s-shell, so chemically they are of the same properties.
Radioactive elements include all those elements whose nuclei contain what?
Radioactive elements include all elements whose nuclei either:contain protons more than 83 proton, orcontain neutron to proton ratio out of the stability ratio.refer to related question below.
What is smaller nucleaus or neutron?
Since a nucleus contains from 1 (heavy hydrogen) to 150 neutrons, as well as up to 110 protons, the neutron is smaller.
Name the property of heavy water?
Heavy water contain deuterium, a hydrogen isotope having one neutron.
Where did the heavy elements in planetary objects originate?
The heaviest elements come mainly from supernovae. Iron is the heaviest element that can be produced by fusion. Heavier elements are produced by neutron capture. An individual free-floating neutron collides with a nucleus and merges with it. That doesn't produce a higher element on the periodic table, because the atomic number depends on the number of protons. However, nuclei with too many neutrons are unstable, and will eventually "decay". A neutron will decay into a proton and an electron. Free neutrons don't exist in great numbers in normal stars, so neutron capture doesn't happen significantly in them. Elements from carbon to iron can be formed by fusion in large stars.
How many elements in 'heavy' water?
Formula of heavy water is D2O. O is oxygen, D is deuterium - a hydrogen isotope having 1 proton and 1 neutron.
Why is lead and Mercury called heavy metal?
This is because heavy metals are those metals having a neutron is to proton ration equal to or greater than 1.5Lead has 82 protons and 125 neutronsn/p=125/82=1.52Mercury has 80 protons and 121 neutronsn/p=121/80=1.51Hence lead and mercury are heavy metals
Why do heavy elements neclei contain proportionally more neutrons than light element nuclei?
It is for this reason that large nuclei contain proportionally more neutrons than light elements
How was neutron discovered?
neutron, uncharged elementary particle of slightly greater mass than the proton. It was discovered by James Chadwick in 1932. The stable isotopes of all elements except hydrogen and helium contain a number of neutrons equal to or greater than the number of protons. The preponderance of neutrons becomes more marked for very heavy nuclei. A nucleus with an excess of neutrons is radioactive; the extra neutrons convert to protons by beta decay (see radioactivity). In a nucleus the neutron can be stable, but a free neutron decays with a half-life of about 17 min (1,013 sec), into a proton, an electron, and an antineutrino. The fact that the neutron possesses a magnetic moment suggests that it has an internal structure of electric charge, although the net charge is zero. The electron-scattering experiments of Robert Hofstadter indicate that the neutron, like the proton, is surrounded by a cloud of pions; protons and neutrons are bound together in nuclei by the exchange of virtual pions. The neutron and the proton are regarded by physicists as two aspects or states of a single entity, the nucleon. The antineutron, the neutron's antiparticle, was discovered in 1956. The neutron, like other particles, also possesses certain wave properties, as explained by the quantum theory. The field of neutron optics is concerned with such topics as the diffraction and polarization of beams of neutrons. The formation of images using the techniques of neutron optics is known as neutrography. See D. J. Hughes, Neutron Story (1959); K. H. Beckurts and K. Wirtz, Neutron Physics (tr. 1964); P. Schofield, The Neutron and Its Applications (1983).
What forms when stars explode?
A supernova, resulting in either a neutron star or black hole. Also may heavy elements are blown out of the star during the explosion.
Element that has the same number of protons but different number of neutrons?
An isotope of an element has the same number of protons but a different number of neutrons. One of the most common is deuterium (heavy water), an isotope of hydrogen that has one neutron instead of the usual zero.
Has chemical analysis of lunar rocks shown that chemical elements not listed in the periodic table exist on the moon?
No, elements are defined by the number of protons they have and the periodic table contains all the elements up to over 100 protons, much past this point they become very unstable and radioactively decay into lighter (less protons in the nucleus) atoms. Elements this heavy do not occur naturally so we would not find them on the moon.
Do protons and neutrons have nearly the same mass?
No, the proton and neutron don't have the same mass. A neutron is about 1.00138 times as heavy as a proton. The neutron is just a bit bigger, as you can see, and when a free neutron decays, it releases a proton and an electron. It might be said that a proton plus an electron equals a neutron, but you might not be able to get a physicist to say that. Links can be found below for more information.
