Piyush Maheshwari
Nov 2, 2023 • 1h
Bharat Panchal
Feb 27, 2022 • 2h
53K followers • Chemistry
Dec 15, 2021 • 2h • 254 views
d & f -block elements, physical properties ,chemical properties ,important trends , compounds of d block elements ,KMnO4, K2Cr2O7 and their reactions , exceptions in f-block