Question

Write the density of silver, nickel, lanthanum, neptunium, tin, and protactinium and arrange them from the least dense to the densest.

Answer 1

Hint : In this question we have to write the densities of all the elements given in the question and have to arrange them in the ascending order. This question can be only done if you have learned the densities of all the elements given in the question. The complete solution of the question is given in the below section.

Complete Step By Step Answer:
Density of silver is $ 10.49 $ , density of nickel is $ 8.94 $ , density of lanthanum is $ 6.15 $ , density of neptunium is $ 20.2 $ , density of tin is $ 7.26 $ , and density of protactinium is $ 15.4 $ . So we are now going to arrange them in ascending order that is from the least dense to the densest. So the order is:
 $ 6.15 < 7.26 < 8.94 < 10.49 < 15.4 < 20.2 $ . Now in this manner we are going to put the names of the elements given above and the order is:
Lanthanum
Note :
Tin is a chemical element which is denoted by Sn. Its atomic number is $ 50 $ . It is a silvery metal which has a faint yellow hue. It is soft enough so that it can be cut easily like indium. There is no need to put much force on it to cut it. Its position in the periodic table is along the cross of fourteenth $ \left( {14th} \right) $ group and fifth $ \left( {5th} \right) $ period. The other elements mentioned above have their own properties just like tin has.