Water's extensive capability to dissolve a variety of molecules has earned it the designation of “universal solvent,” and it is this ability that makes water such an invaluable life-sustaining force. On a biological level, water's role as a solvent helps cells transport and use substances like oxygen or nutrients.
20.
Atomic number is equivalent to its protons and electrons. :)
All nickel atoms would have the same number of protons or atomic number.
