Perhaps the most famous diagram in science and a chemist’s best friend is the periodic table, created in 1869 by Russian chemist, Dmitri Mendeleev. The periodic table organizes every fundamental atom according to their valence electron numbers, size, type, electronegativity, and much more. The first 92 elements on the periodic table are naturally occurring, the … Continue reading The Basics of the Periodic Table
Chemistry
The Weak Interactions Between Atoms
In a previous article I discussed the following ways atoms bond: Covalent Bonds: bond by sharing valence electrons equally between them, Polar Covalent Bonds: where the valence electrons are still shared between atoms but electrons will tend to hang around the more electronegative atom creating partial charges for each atom, Ionic Bonds: wherein the more electronegative atom … Continue reading The Weak Interactions Between Atoms
Valence Electrons, the Octet Rule, and Electronegativity
Atoms are made up of neutrons and protons located within the nucleus and electrons around the nucleus. Electrons inhabit “orbits” that surround the nucleus. Calling them “orbits” is misleading, they are more like areas of probability where electrons are likely to be found called orbitals. The concept of orbitals will be discussed at another time. … Continue reading Valence Electrons, the Octet Rule, and Electronegativity
What are Isotopes?
What are isotopes? You may have heard of them many times in movies when they are talking about nuclear weapons, but isotopes are not just unstable atoms used for undergoing nuclear fission (the splitting of an atom’s nucleus), they are, simply put, atoms that have the same number of protons, but vary in their number … Continue reading What are Isotopes?