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Q.

The chemistry of lithium is very similar to that of magnesium even though they are placed in different groups. Its reason is

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a

Both are found together in nature

b

Both have nearly the same size

c

Both have similar electronic configuration

d

The ratio of charge and size is nearly same

answer is D.

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Detailed Solution

A Diagonal Relationship is said to exist between certain pairs of diagonally adjacent elements in the second and third periods of the periodic table. These pairs (Li & Mg, Be & Al, B & Si, etc.) exhibit similar properties.

Hence, The ratio of charge and size is nearly same

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