logo aglasem.com

NCERT Book Class 11 Chemistry Chapter 3 Classification of Elements and Periodicity in Properties

NCERT Book Class 11 Chemistry Chapter 3 Classification of Elements and Periodicity in Properties More Detail

NCERT

The National Council of Educational Research and Training (NCERT) is an autonomous organisation set up in 1961 by the Government of India to assist and advise the Central and State Governments on policies and programmes for qualitative improvement in school education.