What will be the rate of percolation if a soil sample took 25 mins to percolate 300 mL of water?

answer; protein;

the answer for sodium is 0.186

the answer for rubidium is 0.251

ca has a crystalline lattice with positive ions (since it is a metal, metals are positively charged) and electrons flow freely in its structure since the ca atoms have a large nuclear radius so the electrons are not tightly held, therefore the electrons can flow freely since they are not being highly attracted by the nucleus. moreover, one of the properties of metals are that they are conductors of electricity, thus proving ca is the element.