Question

मेंडलीफ ने तत्वों का वर्गीकरण किस आधार पर दिया तथा मेंडलीफ के वर्गीकरण में कितने वर्ग एवं कितने आवर्त थे​

Answer 1

Explanation:

How Mendeleev's Periodic Table was made:

Elements are arranged in the periodic table in the increasing order of their relative atomic masses (mass doesn't mean weight truly). Mendeleev divided his periodic table in eight groups and seven periods. Groups from I to VII are meant for normal elements and group VIII is for transition elements.

I know upto this much. If it was helpful, please mark it as the brainliest answer.