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 …
Carbon-carbon bonds A carbon atom has 4 valence electrons A single bond Most bonds that carbon form are single bonds. Single bond simply means sharing one pair of bonding electrons between two atoms and is represented by a single line. Read More …
What is a COVALENT BOND? The term covalent bond is used to describe the bonds in compounds that result from the sharing of one or more pairs of electrons. There are two types of covalent bonds – nonpolar and polar 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 …
A nonpolar covalent bond is a chemical bond where electrons are shared equally between two atoms The electrons are shared equally between the two atoms Nonpolar covalent bond electronegativity scale If the difference in electronegativity between two atoms is 0.4 Read More …
The electrons are unequally shared between two atoms When a chemical bond involves “the sharing of a pair of electrons by two atoms in a molecule”, it is generally called a covalent bond. In a polar covalent bond, the Read More …
An ionic bond An ionic bond is formed between elements of large differences in electronegativities, which are typically found between metals and non-metals. The atom that loses the electron(s) becomes a positively charged ion called a cation, and the one Read More …
A QUICK LOOK AT THE THREE DIFFERENT TYPES OF MOLECULAR BONDS HOW DO YOU FIND OUT THE TYPE OF BOND If you’re given two elements, such as carbon and oxygen, how do you tell what type of bond they will 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.
