Account for the following :
E° value for the Mn3+/Mn2+ couple is highly positive (+1.57 V) as compared to Cr3+/Cr2+.
Write one similarity and one difference between the chemistry of lanthanoid and actinoid elements.
Similarities between lanthanides and actinides
Differences between lanthanides and actinides
How is the variability in oxidation states of transition metals different from that of the p-block elements?
An element has atomic mass 93 g mol–1 and density 11.5 g cm–3. If the edge
the length of its unit cell is 300 pm, identify the type of unit cell.
Calculate the number of unit cells in 8.1 g of aluminium if it crystallizes in a
f.c.c. structure. (Atomic mass of Al = 27 g mol–1)
Give reasons :
In stoichiometric defects, NaCl exhibits Schottky defect and not Frenkel
defect.