The properties of the noble (inert) gases
The inert gases are the elements in which the outermost electron shells are completely filled with the electrons, so they don’t participate in any chemical combination in the ordinary conditions.
Tagged: Noble gases
The description of the modern periodic table
The modern periodic table consists of 7 horizontal periods and 16 vertical groups (18 vertical columns). The elements of the modern periodic table are classified into 4 blocks (s, p, d, and f).
Graduation of electronegativity of elements in modern periodic table
Electronegativity is the ability of the atom in the covalent molecule to attract the electrons of the chemical bond towards itself, There is an inverse relationship between the atomic size of the atom of...
Matter construction and properties of molecules of matter
The molecules The matter consists of very small structural units known as the molecules, The molecule is the smallest part of the matter which can exist freely, and it has the properties of the...