Q.
0.005 cm thick coating of silver is deposited on a plate of 4728.6Ao area. The number of silver atoms deposited on the plate are (atomic mass of 6172.8Ao and its density 25oC )
Volume of Ag deposited I<IV<II<III Mass of Ag deposited = Volume I<III<II<IV density Hence, number of Ag atoms deposited I>III>IV>IIFeCr2O4INa2CrO4IICr2O3IIICrNaOH/air