a Explain the terms valency and variable valency b How are the elements with variable valency named ...

Question

a Explain the terms valency and variable valency b How are the elements with variable valency named Explain with an example

Accepted Answer

a Valency is the capacity of an atom to lose gain or share atoms during a chemical reaction is called its valency Sometimes atom of an element can lose more electron than they are present which means they lose electron from its penultimate shell Such an element is said to exhibit variable valency b If an element exhibits two different positive valencies then 1 For the lower valency use the suffix OUS at the end of the name of the metal 2 For the higher valency use the suffix IC at the end of the name of the metal

Selina Solutions Class 9 Chemistry Solutions for Exercise 1A in Chapter 1 - Chapter 1 The Language Of Chemistry