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The properties which are common to both ...

The properties which are common to both groups 1 and 17 elements in the periodic table are:

A

electropositive character incrases down the groups

B

Reactivity decrases from top to bottom in these grous

C

atomic radii incrases as the atomic number increases

D

Electronegativity decreases on moving down a group

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The correct Answer is:
A, C, D
Statements (a), (c) and (d) are common to both the groups 1 and 17. statemennt (b) is true only for group 17 elements.
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