What determines whether an isotope is radioactive or not? What are the three physical factors that affect reaction rates? How can one determine the rate determining step of a chemical equation, and how is it different from the rate law?
A nucleus can be unstable if it has an excess of protons or neutrons, leading to a tendency to undergo radioactive decay to reach stability. 8 What determines the stability of a nucleus? The stability of a nucleus is determined by the ratio of neutrons to protons and the overall energy of...
What determines an element's electronegativity? What periodic trends exist for electronegativity? What is lithium's mass number? How is electron affinity different from electronegativity? How does electronegativity increase? What is lithium chloride's formula?
of observed peaks with respect to isotope content.We have developed a method called SMIRFE that detects small biomoleculesand determines their elemental molecular formula (EMF) using detectedsets of isotopologue peaks sharing the same EMF. ... JM Mitchell,RM Flight,HNB Moseley - 《Analytical Chemist...
What elements make up fats? Which chemical elements might leave the atmosphere faster than others? What characteristic distinguishes native elements from other minerals? What are the 6 most common elements in living things? What characteristic of an element determines its specific isotope?
carries a net positive charge and is called a cation. An ion with more electrons than protons carries a net negative charge and is called an anion. The number of neutrons doesn't come into play since they are electrically neutral. Changing the number of neutrons determines the isotope. ...
The number of protons in an atom is unique to each element. For example,carbonatoms have six protons,hydrogenatoms have one andoxygenatoms have eight. The number of protons in an atom is referred to as the atomic number of that element. The number of protons also determines the chemical be...
Of the 118 known elements, 94 are known to occur naturally on Earth. The others are called synthetic elements. The number of neutrons in an element determines its isotope. 80 elements have at least one stable isotope. Thirty-eight consist solely of radioactive isotopes which decay over time ...
Abundant and diverse proxy evidence indicates that Earth’s surface temperatures during the Eocene (~56–33.9 Ma) substantially exceeded modern values18, with poles that were largely ice-free. Current estimates of atmospheric CO2concentrations based on the boron isotope (δ11B) proxy range from ...
The proton is, in effect, the index particle of any atom. It is the number of protons in an atom that determines the identity of the element an atom belongs to; in other words, if two atoms have a different number of protons, they are not the same element. ...