For hydrogenation, catalytic activity increases from Group 5-11 It's also mentioned that the activity is maximum for groups 7-9 - Chemistry - Surface Chemistry

Question

For hydrogenation, catalytic activity increases from Group 5-11
It's also mentioned that the activity is maximum for groups 7-9 So,
Is the activity higher in group 11 or in group 9?

Mohit Gupta · Accepted Answer

Dear student, The catalytic property increases from group 5-11,
this is a general trend which means that the catalytic property
increases from left to right in d-block
The activity is maximum at 7-9, and then it is almost constant
from 9 to 11 and doesn't decreases As the catalytic property
depends upon the variable oxidation and size as well therefore in
total the maximum catalytic property is maximum for 7 to 9 group As
the size of group 11 and 12 is small therefore they have a little
lower catalytic property

For hydrogenation, catalytic activity increases from Group 5-11. It's also mentioned that the activity is maximum for groups 7-9. So, Is the activity higher in group 11 or in group 9?