How To Predict The Type Of Bond Formed Between Two Atoms Types of atomic bonds There are three different types of bonds that can be formed when atoms combine. A chemical bond is typically classified as one being either: Purely covalent bond – The type of bonding in which the Read more…
What Is Hydrogen Bonding? Hydrogen bonding is the electrostatic force of attraction between a hydrogen atom (which is covalently bonded to a small and highly electronegative atom) and the lone pair of electrons of another small and highly electronegative atom. It is a special type of intermolecular force with some Read more…
What are van der Waals’ forces? van der Waals’ forces are weak attractive or repulsive forces between molecules or atoms that are caused by a temporary uneven distribution of electron clouds. Noble gases such as neon and argon exist as single atoms and do not form covalent bonds because they Read more…
Electronegativity And Bond Polarity In Covalent Molecules Electronegativity Electronegativity is the ability of a covalently bonded atom to attract the bond pair of electrons towards itself. The greater the electronegativity value of an atom, the greater the power with which it attracts the electrons in a covalent bond towards itself. Read more…
VSEPR theory can be used to predict actual geometrical shapes of molecules and composite ions by determining bond directions and angles relative to the central atom. VSEPR is short for Va
Trends of first ionisation energies across a Period (A level Chemistry) In order to be able to explain the trends of the first ionisation energies across a period of the periodic table we first need to know about the first ionisation energy itself. The first ionisation energy of an element Read more…
What are redox reactions (A level Chemistry) A RedOx reaction is simply a reaction in which Reduction and Oxidation take place at the same time. Oxidation in simple terms We can define oxidation as the gain of oxygen by a substance. For example, when magnesium reacts with oxygen, the magnesium Read more…
What are transition elements? Transition elements are d-block elements that form one or more stable ions with a partially full d subshell. However, not all d-block elements are transition elements by definition. For example, Sc and Zn are d-block elements but they do not fit the definition of transition elements Read more…
Electron Shells, Subshells and how they are filled (A level Chemistry) Many chemistry students face problems on electron shells, subshells and how they are filled. However, the issue of filling shells and sub-shells is very straight forward except for some minor exceptions that we are going to highlight of course. Read more…
What are valence electrons (A level Chemistry) What are valence electrons? Welcome, and in this post we are going to be discussing about: what valency electrons are. how valency electrons determined the chemical properties of an atom. the relationship between the number of valence electrons of an element and its Read more…