Isotopes are members of a family of an element that all have the same number of protons but different numbers of neutrons. The number of protons in a nucleus determines the element’s atomic number on the Periodic Table.

Isotopes. An isotope is one of two or more forms of the same chemical element. Different isotopes of an element have the same number of protons in the nucleus, giving them the same atomic number, but a different number of neutrons giving each elemental isotope a different atomic weight.

Isotope, one of two or more species of atoms of a chemical element with the same atomic number and position in the periodic table and nearly identical chemical behaviour but with different atomic masses and physical properties. Every chemical element has one or more isotopes.

Exposure to radiation generally is considered harmful to the human body, but radioisotopes are highly valuable in medicine, particularly in the diagnosis and treatment of disease. Radioisotopes typically have short half-lives and typically decay before their emitted radioactivity can cause damage to the patient’s body.

One of the most important applications of nitrogen stable isotopes is its ability to determine the trophic level of a species. Nitrogen undergoes an increase (2-4%) in heavy isotope enrichment with each trophic level and can therefore serve as a tool in determining dietary shifts (Hobson & Wassenaar 2008).

nitrogen-14

What do all isotopes of an element have in common? Explain why carbon-14 and nitrogen-14 are not considered isotopes of each other? Because they are two different elements. Same mass number but different atomic number.

These radioisotopes are easily transported in the coolant system and are the largest source of occupational radiation exposure. Of particular interest are the isotopes nitrogen-16 (N-16) and tritium (H-3).

Nitrogen-16 is an isotope of nitrogen generated by neutron activation of oxygen contained in the water. It has a short half-life of 7.1 sec and it decays via beta decay.

Production of nitrogen-16 through the capture of a neutron by the nucleus of an oxygen atom: oxygen-16 + neutron —> nitrogen-16 + proton (abbreviated as 16O(n, p)16N). Nitrogen-16 has a short (7-second) half-life and is primarily a hazard to workers at nuclear plants.

Explanation: Well, 14N and 15N are two isotopes of nitrogen, meaning that they have the same amount of protons but different amount of neutrons. They will have different amount of neutrons, there are 7 neutrons in 14N and 8 neutrons in 15N .

Ozone (O3) is a triatomic, molecule, consisting of three oxygen atoms. It is a triatomic molecule and an allotrope of oxygen. Ozone can be very helpful to living organisms because it protects them from harmful ultraviolet light. Ozone is a allotrope of oxygen comprised of three oxygen atoms.

Oxygen-15

oxygen-16

Greenhouse gases (GHG) include carbon dioxide, water vapor, methane, ozone, nitrous oxide and fluorinated gases. These molecules in our atmosphere are called greenhouse gases because they absorb heat.