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).
Tagged: Non-metals
Graduation of metallic and nonmetallic property in the modern periodic table
Modern periodic table In the modern periodic table, each period starts with the strong metal (in group 1 (1 A), where the metallic property decreases by increasing the atomic number, till we reach the...
Chemical properties of non-metals in modern periodic table
Non-metals The non-metals are the elements that have more than four electrons in their outermost energy levels, The non-metals are characterized by the smallest atomic sizes and the largest electronegativity.
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...