Tagged: graduation in properties valency atomic number

October 6, 2014

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...

The Matter

September 13, 2014

Atomic size of the elements in the modern periodic table

The atomic radius is used as a measure for the atomic size of the atom, and its measuring unit is picometre (Pm), The picometre is part from million of million part of metre.