Introduction to Number of Atoms in a Unit Cell According to our knowledge, there are several unit cells in a crystal lattice. In the unit cell, each of the constituent particle comprising of a molecule, ion, or atom carries a fixed and specific position, known as the lattice site. We can easily do the calculation … Read more
Voids A Crystalline Solid is characterized by the close packing and space lattices of their atoms. Nevertheless, there are some gaps present in between the structures in the arrangement of crystalline solids which are called “Voids”. Literally, void means the gap in between constituent particles. A ‘void’ is also defined as the empty space or … Read more
As per our knowledge, component particles including ion, molecule, or atom are arranged in unit cells having different patterns. It doesn’t matter in what manner particles are arranged in a lattice, so, there’s always a little space left vacant inside which are also known as “Voids”. Quantitative characteristic of solid state can be achieved with … Read more
Packing in solids can illustrate the crystalline solid structures. When comes the crystal structure, the centers of ions, molecules, atoms are located on the lattice points. Atoms are presumed to be spherical to describe the structures and bonding of metallic crystals. The sphere’s arrangement in closed-packed structures are packed densely so as to undertake … Read more
Definition of Unit Cell Atom’s smallest group in which there’s complete crystal symmetry, and from which whole of the lattice can be formed in 3 dimensions by the repetition process is defined as the Unit Cell. A repeating and regular pattern is displayed by Crystalline Solids of constituent particles. What is a Lattice? … Read more
A regular 3-D arrangement of ions or atoms or molecules in the crystal is generally described in the context of a unit cell and the space lattice. To understand these two terms, let’s take 2-D patterns Crystalline solids’ geometric arrangement belonging to constituent particles in the form of a point in space is called crystal … Read more
Ionic Equilibrium: Common ion effect Common ion effect occurs when a weak acid and its conjugate base or a weak base/conjugate acid are both present in a solution. It is a special case of the LeChatelier principle. When a common ion is added to a weak acid/base, is equivalent to adding stress to the system. … Read more
Ionic Equilibrium: Solubility product The equilibrium between solids and ions is not the same as the equilibrium between gases. The equilibrium between solids and ions can be considered as a “phase” equilibrium (e.g. NaCl(aq)). Partially soluble salts form a dynamic equilibrium with the hydrated cations and anions in solution. For instance, the initial point when … Read more
Ionic Equilibrium: Buffer solution Buffers are the solutions that withstand small changes in pH. Buffers can work only when small amounts of acid or alkali are added to them. They contain relatively large amounts of the weak acids (HA) and their conjugate base (A־), (or weak bases and their conjugate acids). Buffers can be prepared … Read more
Ionic Equilibrium: Hydrolysis of salts Salts are electrolytes that are produced when an acid reacts with a base. Because of the dissociation, the ions involved can cause water molecules to dissociate. This process of the dissociation of water molecules into hydronium (H3O+) and hydroxide (OH–) is called Hydrolysis. Hydrolysis is a term applied to reactions … Read more