Q. The chemistry of lithium is very similar to that of magnesium even though they are placed in different groups. Its reason is:
A. Both are found together in nature
B. Both have nearly the same size
C. Both have similar electronic configuration
D. The ratio of their charge and size (i.e. charge density) is nearly the same
Answer: The ratio of their charge and size (i.e. charge density) is nearly the same
