The metal used to recover copper from a solution of copper sulphate is?

The nucleus of an atom consists of?

A solution contains 20g of solute in 180g of solvent. If the solvent is water, what is the concentration of the solution in terms of mass by mass percentage

The only metal that is anti-bacterial is?

An element having the atomic number 17 will resemble which of the following elements having atomic number as given below?