valency of group 14

Cause of Periodicity of Elements - The modern periodic table is based on the electronic configuration of the elements. The properties of an element are determined largely by the electrons in its outermost or valence shell. Valence electrons interact with other atoms and take par..

It is the reluctance of s-electrons of the valence shell to participate in bonding. This effect becomes more pronounced towards the bottom of each group of the p-block element..

The modern periodic table is based on the electronic configuration of the elements. The properties of an element are determined largely by the electrons in its outermost or valence shell. Valence electrons interact with other atoms and take part in all chemical reactions, while..

Bonding in Co-ordination Compounds - The first theory was called the Werner's theory of co-ordination compounds. 1) Metals possess two types of valencies: a) Primary valency or ionizable valency. It is also referred to oxidation state. b) Secondary valency wh..

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 valence shell and ends with an element in which the valence..

Group 2 elements are called alkaline Earth metals. These elements have two electrons in the valence shell of their atoms, preceded by the noble gas configuration. Their general configuration is written as [Noble gas] ns 2 where 'n' represents the valence shel..

. According to Mendeleev's periodic law, the physical and chemical properties of elements are periodic functions of their atomic mass Mendeleev was able to predict the existence of undiscovered elements like Ga, Sc and Ge Mendeleev corrected the atomic masses of a few elements on the basis of their..

Tin and lead (Sn and Pb) belong to group 14 of the periodic table. They have four electrons in their valence shell, their valence shell configuration being ns 2 np 2 . These elements exhibit oxidation states of +2 and +4. The oxidation state +2 is more comm..

Noble gases are also known as inert gases and do not take part in chemical reactions. They have their outermost shell complete and thus remain stable. They do not generally combine with other substances, nor are they affected by oxidization agents or by reducing agents. They are placed in the VIII..

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 (..