In 1913 Niels Bohr proposed a model to describe how energy levels are organized around an atom. While his model is now known to be incorrect, it is useful for understanding energy levels as Bohr’s model closely resembles planets orbiting Read More …
Ionization Energy Trend Ionization energy is defined as the amount of energy needed to eject a valence electron from an atom in the gas phase. It is measured in kJ/mol. A valence electron is simply an electron located in the Read More …
Today, we are going to learn about how the periodic table is organized and the important information that it provides. Scientists discovered that if they arranged the elements according to their atomic number, properties of the elements would occur in Read More …
Photograph of Linus Pauling: Nobel Foundation, Public domain, via Wikimedia Commons The above is an example of electronegativity bond scale. It shows the different types of chemical bonds formed between atoms based on the electronegativity difference. Bond scale varies slightly Read More …
What is the Octet Rule of Electron Configuration? Electron configuration is the arrangement of electrons in each energy level or shell of an atom. If the outer shell of an atom is not filled to its maximum level, the atom Read More …
Definition The valence electrons are the electrons in the outermost shell or last energy level of an atom. valence electrons are electrons in the last shell of an atom Valence electrons are electrons in the highest principal energy level. They Read More …
Electronegativity is a measure of the tendency of an atom to attract a bonding pair of electrons.
