- Why is C 14 unstable?
- What is the difference between oxygen 16 and 18?
- What is the heaviest stable isotope?
- Why is iron the most stable nucleus?
- Is oxygen 18 stable or unstable?
- Why is oxygen 15 unstable?
- Why are all elements above 82 unstable?
- How do you know if a nucleus is stable?
- What is the mass number of oxygen 17?
- Is c12 or c14 more likely to bond with oxygen?
- Is hydrogen stable or unstable?
- What keeps a nucleus stable?
- What makes an isotope stable or unstable?
- What is the same about oxygen 16 17 and 18?
- Why lighter nuclei are unstable?
- What are 2 radioactive isotopes of oxygen?
- What is the symbolic notation for oxygen 16?
- Who was the founder of oxygen?
- Why do nuclei decay?
- Is oxygen radioactive or stable?
- What is the half life of oxygen 15?
Why is C 14 unstable?
Carbon-14 is the radioactive form of carbon, famous for its role in working out the ages of fossils.
It’s radioactive because it’s got too many neutrons for its six protons, making it unstable.
(The 14 in the name denotes the total number of protons and neutrons)..
What is the difference between oxygen 16 and 18?
Answer and Explanation: Oxygen-16 and oxygen-18 differ in the number of neutrons in their nuclei. Oxygen-16 has 8 neutrons, while oxygen-18 has 10 neutrons.
What is the heaviest stable isotope?
NotesLighter: bismuth-208Bismuth-209 is an isotope of bismuthHeavier: bismuth-210Decay product of: astatine-213 (α) polonium-209 (β+) lead-209 (β−)Decay chain of bismuth-209Decays to: thallium-205 (α)
Why is iron the most stable nucleus?
The more stable a nucleus is, the more energy is required, per nucleon, to pull the nucleus apart. This stability is caused by the attractive nuclear force between nucleons. Iron 56 is the most stable nucleus. … This repulsion between distant protons leads to less binding energy per particle and instability.
Is oxygen 18 stable or unstable?
Isotopes of oxygenIsotopeDecayabundancemode16O99.76%stable17O0.04%stable18O0.20%stable
Why is oxygen 15 unstable?
Oxygen-15 undergoes positron decay because it has too few neutrons for the number of protons. … Oxygen-15 has 7 neutrons and 8 protons. It is unstable because it is below the band of stability.
Why are all elements above 82 unstable?
In the case of atoms of elements with a mass greater than 82, the level of binding energy does not allow stability. The force of repulsion between the particles that constitute the nucleus makes the atoms split and atoms of new elements are formed as they try to reach a nuclear configuration which is stable.
How do you know if a nucleus is stable?
The principal factor for determining whether a nucleus is stable is the neutron to proton ratio. The graph below is a plot of the number of neutrons versus the number of protons in various stable isotopes. Stable nuclei with atomic numbers up to about 20 have an n/p ratio of about 1/1.
What is the mass number of oxygen 17?
16.999131Description: Oxygen-17 atom is the stable isotope of oxygen with relative atomic mass 16.999131. The least abundant (0.038 atom percent) isotope of naturally occurring oxygen.
Is c12 or c14 more likely to bond with oxygen?
Simply because the 12C isotope is far more abundant, approx. 99% . There would exist both 13CO2 and 14CO2 in the atmosphere, but their abundance would reflect the isotopic distribution.
Is hydrogen stable or unstable?
Hydrogen only has one electron in its lowest energy level. This is a very unstable arrangement, and hydrogen gas undergoes a variety of reactions so as to reach a stable electron configuration where its energy level is either empty of electrons, or filled with electrons.
What keeps a nucleus stable?
Inside the nucleus, the attractive strong nuclear force between protons outweighs the repulsive electromagnetic force and keeps the nucleus stable. Outside the nucleus, the electromagnetic force is stronger and protons repel each other.
What makes an isotope stable or unstable?
A stable isotope is one that does not emit radiation, or, if it does its half-life is too long to have been measured. It is believed that the stability of the nucleus of an isotope is determined by the ratio of neutrons to protons.
What is the same about oxygen 16 17 and 18?
Isotopes are elements that contain the same amount of protons, but differ in the number of neutrons in their nuclei. … Therefore, oxygen 16 has 8 protons and 8 neutrons, oxygen 17 has 8 protons and 9 neutrons, and oxygen 18 has 8 protons and 10 neutrons.
Why lighter nuclei are unstable?
In summary it is the balance of protons and neutrons in a nucleus which determines whether a nucleus will be stable or unstable. … Too many neutrons or protons upset this balance disrupting the binding energy from the strong nuclear forces making the nucleus unstable.
What are 2 radioactive isotopes of oxygen?
There are several radioactive isotopes of oxygen but two examples would be oxygen-13 and oxygen-14.
What is the symbolic notation for oxygen 16?
Oxygen-16GeneralSymbol16ONamesoxygen-16, O-16Protons8Neutrons87 more rows
Who was the founder of oxygen?
Joseph PriestleyAntoine LavoisierCarl Wilhelm ScheeleOxygen/Discoverers
Why do nuclei decay?
Nuclear decay occurs when the nucleus of an atom is unstable and spontaneously emits energy in the form of radiation. The result is that the nucleus changes into the nucleus of one or more other elements. These daughter nuclei have a lower mass and are more stable (lower in energy) than the parent nucleus.
Is oxygen radioactive or stable?
Stable isotopes are variants of atoms that differ in mass but do not decay over time, that is, they are not radioactive. The element oxygen (O) is found in three naturally occurring stable isotopes, 18O, 17O, and 16O.
What is the half life of oxygen 15?
about 2 minutesThis cyclotron product has a very short half life of about 2 minutes thereby allowing for multiple, serial measurements. Oxygen-15 atom is the radioactive isotope of oxygen with relative atomic mass 15.003065. The longest-lived oxygen radionuclide with half-life of 122.2 s.