Some of representative elements groups are known as regular groups, Because their elements show a great regularity & graduation in their properties and that is not found in the transition elements, One of the...
The most stable atoms are those of noble gases such as helium, neon, argon …..etc, Because their outermost energy level is filled with electrons, so, the atoms of these electrons do not undergo any...
The modern periodic table is a systematic arrangement of elements based on their atomic number, which reveals clear patterns in their physical and chemical properties. One of the most important trends observed in this...
