Hey everyone. So in this example question, it says identify transition metal with the highest density O. Remember our density is going to increase as our mass increases. And also remember that there's going to be a greater spike in density as we go down a group than going across a period. So going down a group, there's more significant increase in our density.
If we take a look here at our options, we'd say here that A&B represent transition metals that are going to be in four. And if we look at C&D, well, they represent elements that are in eriod 6. Ince C&D are lower down in terms of groups, they're in row six. Their densities are going to be more impactful. They're going to have a more significant higher value. So that means A&B are out.
Now here if we look at C versus D, remember the general trend is as we had towards the right across a period, our density increases and as we go down to group, our density increases. Osmium C is more to the right than option D So osmium would have a larger density. So here my answer would be option C.
So just remember we look and see where they are in relation to each other on the periodic table. The ones lowered down in the group would have a more significant higher density than the ones higher up a group. That's what eliminate A&B. And then to break the tie between C&D, just remember more towards the right of the periodic table equals a higher density, giving us option C as our final answer.