Classification of Elements and Periodicity

Most transition metal ions and complexes are paramagnetic, or attracted to the magnetic field, due to the existence of unpaired electrons in the (n-1)d orbitals.  The magnetic moment and thus the paramagnetic property increase as the number of unpaired electrons increases from 1 to 5.  Transition elements with paired electrons are diamagnetic, which means they […]

Magnesium (Mg) is a chemical element with the atomic number 12 and the symbol Mg. It’s a gleaming grey solid with many of the same physical and chemical properties as the other alkaline earth metals. The successive addition of three helium nuclei to a carbon nucleus produces this element in huge, aged stars. Much of

Long-form of Periodic Table The modern periodic table of elements is a grid that groups elements into families that are related to one another in chemical properties. Its fundamental building block is the period. A period is a row of elements with the same number of electrons in their outer shell. For example, the period

The chemical properties related with the elements categorised as metals in periodic table are referred to as metallic character. The capacity of an element to lose the outermost valence electrons determines its metallic nature. Metallic Character Metallic character refers to a set of chemical traits which are linked with the metals. These chemical features are caused

Lanthanides are the rare earth elements of the modern periodic table, that is, the elements with atomic numbers ranging from 58 to 71 that are found after the element Lanthanum in the periodic table of elements. They are referred to as rare earth metals because the amount of these elements found in the Earth’s crust

Lanthanides are the modern periodic table’s rare earth elements, with atomic numbers ranging from 58 to 71 after lanthanum. Since the occurrence of these elements is extremely uncommon, they are known as rare earth metals. The lanthanide series is the set of elements in which the 4f sublevel is full. All of these elements are

Lanthanide contraction or lanthanoid contraction is the greater-than-expected decrease in the ionic radius of the lanthanide series elements (atomic number 57-71) and the succeeding elements (beginning with atomic number 72, hafnium), such as mercury. Norwegian scientist Victor Goldschmidt originated the term “lanthanide contraction” in his 1925 publication on geochemical distribution laws of the elements. Decreasing

Isotopes are elements that share the same atomic number but differ in mass. The total number of protons is equal to the atomic mass or mass number of an element, whereas the entire number of protons is equal to the atomic number of an element. The number of protons in a given element will always

Isotopes are two or more types of atoms with the same atomic number (number of protons in their nuclei) and periodic table position (and so belong to the same chemical element) but distinct nucleon numbers (mass numbers) due to differing numbers of neutrons in their nuclei. While all isotopes of the same element have nearly

Introduction Let us look into the concept of isotones. All matter is made up of atoms in different arrangements. Atoms are made up of protons, neutrons, and electrons. Every proton has a positive charge, every electron has a negative charge, and every neutron has no charge. That is, it is neutral. When nuclear scientists study