Hey there,
The answer is Group 1 elements.
Hope this helps :))
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Explanation:
Transfer of mass A into stagnant film B depends on the availability of driving force.
Whereas driving force is the pressure difference at the surface of A and the bulk.
As, 

Therefore, putting the given values into the above formula as follows.

= 
= 0.132 
Thus, we can conclude that the flux of A from a surface into a mixture of A and B is 0.132 
Answer:
so i never did this befor so i am sorry hope you get the answer
Explanation:
Nearer to the chlorine as it has a greater electronegativity