Valence electrons: The outer electrons, that are involved in bonding and most other chemical changes of elements. Rules for defining valence electrons.

The ionization energy is the amount of energy required to remove an electron from the ground state of a gaseous atom or ion.

of the physical and chemical properties of an element based on information of the elements surrounding it on the periodic table. See: Mendeleev's ...

Table 5.2 gives the properties predicted by Mendeleev for the unknown element eka-silicon and those for germanium discovered by the German chemist Clemens ...

Periodic Table and Electron Affinity: In a period, atomic size decreases with increase in effective nuclear charge and hence increase in electron affinity.

Alkaline Earth Metals. Transition Metals. Other Metals. Metalloids. Non-metals. Halogens. Noble Gases. Lanthanides. Actinides. Atomic Number. Symbol. Name.

"The properties of elements are a periodic function of their atomic number". It means if the elements are arranged in the increasing order of their atomic ...

Physical and chemical properties of an element depend on the number of electrons and their arrangement. Hence atomic number is the fundamental property of an ...

The physical and chemical properties of elements are the periodic function of their atomic weights, i.e., when the elements are arranged in order of their ...

The physical and chemical properties of the elements are periodic functions of their atomic numbers. The Periodic Law revealed important analogies among the ...