valency table

Periodic Table and Valency of Elements - a) Group IA, IIA and IIIA consists of metals of normal elements. They have 1, 2, or 3 valence electrons which they can easily donate to acquire the configuration of nearest noble gas. They become positively charged i.e., cations..

a) Group IA, IIA and IIIA consists of metals of normal elements. They have 1, 2, or 3 valence electrons which they can easily donate to acquire the configuration of nearest noble gas. They become positively charged i.e., cation..

>-ous , and the one with the higher valency, ends as -ic . Lower Valency Higher Valency Cuprous Cu+ Cupric Cu++ Ferrous Fe++ Ferric Fe+++ Plumbous Pb++ Plumbic Pb++++ Mercurous Hg+ Mercuric Hg++ Aurous Au+ Auric Au+..

Valence electrons of an atom are responsible for chemical reactions as they take part in them. Elements having same number of valence electrons in their atoms possess similar chemical properties. All alkali metals have one valence electron in their atom. Thus, their..

Covalent Compounds and Periodic Table - Covalent compounds are formed by the sharing of electrons by atoms of non-metallic elements between groups IVA and VIIA. The elements of these groups react with one another by sharing election pairs. Thus, the valency of an element in a co..

Main Features of Modern Periodic Table - 1. The modern periodic table is divided into two main categories: (i) Vertical columns called Groups and (ii) Horizontal columns called Periods. 2. There are 18 vertical columns or groups. These are further sub-divided into A and B (group..

Position of Chlorine in the Periodic Table - 1.Chlorine is placed second after fluorine in group VIIA. 2. Other members of this group are fluorine, bromine, iodine and astatine (the last member is radioactive). 3. Members of this group are called 'halogens' meaning salt producers. 4. Atom..

Position of Oxygen and Sulphur in the Periodic Table - 1. Oxygen is the first member of the group VIA and sulphur is the second member of the group VI..

1. Oxygen is the first member of the group VIA and sulphur is the second member of the group VI..

Main Features of the Long Form of the Periodic Table - 1. The properties of an element in the periodic table mainly depend on its outer electronic configuration, except in the case of transition elements. 2. Each period begins with an element having only one electron in the ..