An incomplete form of the periodic table is given below. Write answers to the questions connecting the position of elements in it.
Among B and I which has higher metallic character?
B has higher metallic character
Metallic character goes on decreasing across a period because:
i. As we move from left to right, nuclear charge increases with increase in atomic number. This increase the force of attraction of electrons by the nucleus.
ii. As a result, the tendency of losing electrons goes on decreasing.
iii. Therefore, metallic character decreases within a period.
Thus, B has higher metallic character.
Note: More easily an element loses electrons, higher will be its metallic character (electropositive character)
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