I need main point of classification of element so that it will help me to learn this chapter in short time . Please sir for that i need your help.
Plz click on the link for get the chapter notes of periodic classification:http://www.dronstudy.com/book/periodic-classification-of-element-chapter-notes/
Call us: 90-26-27-28-29, 9157460799, 02614055508
Or, Fill out the form & get a call back.