Trends: Valency, Atomic size and Metallic status Valency: Valency is the number of atoms of an element that combine with other atoms to form molecules o...
Trends: Valency, Atomic size and Metallic status
Valency:
Valency is the number of atoms of an element that combine with other atoms to form molecules or compounds. The valency of an element is determined by the outermost energy level of its atoms, which are the electrons in the outermost shell. Elements in the same group of the periodic table have the same valency, meaning they form compounds with the same number of valence electrons.
Atomic size:
Atomic size is the distance from the nucleus to the outermost electron. It is determined by the number of protons in the nucleus, which are in the atom's atomic number. Elements with more protons tend to have larger atoms. Similarly, elements with more electrons tend to have smaller atoms.
Metallic status:
A metal is an element that exhibits metallic properties, such as shiny appearance, malleability, and ductility. Metals are typically composed of elements in the d-block of the periodic table. These elements have a filled d-orbital, which means that the electrons in this orbital are not involved in bonding with other atoms. This allows metals to move freely and exhibit the characteristic properties of the metal state