Q.

In the Periodic Table, the electropositivity of elements

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a

decreases from left to right across a period and on descending a group

b

decreases from left to right across a period and increases on descending a group

c

increases from left to right across a period and decreases on descending a group

d

increases from left to right across a period and on descending a group

answer is B.

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Detailed Solution

Electro positivity rises down a group and falls across a period. Because the valence shells of the atoms (metals) at the left of the table are less than halfway full, they tend to lose electrons and have high electro positivity.

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