Which element in row 6 of the periodic table (shown below) has the largest radius?

The answer would be Caesium (Cs).

The periodic trend of atomic radius is that it increases as you move down the periodic table and and to the the left. So since we are looking at Period 6, we look at it horizontally. Cesium is found in the left-most side of the period, so it has the largest atomic radius.

b. latent learning (the word "latent" itself means something that exists but isn't obvious, only under certain conditions! )

answer: the rock sample is a sedimentary rock.

explanation:

it is given that:

mass of rock sample, m = 2.7 g

volume of rock sample,

so, density of rock sample will be

since, the density of rock sample is . hence, the rock sample is a sedimentary rock, whose densities varies between .