Which group has 1 valence electron?

Particles vibrate in a rigid structure and do not move relative to their neighbors.

Achemist 16 drop copper metal from copper chloride solution. the chemist place is 0.50 g of aluminum foil in a solution containing 0.75 g of copper (ii) chloride. a single replacement reaction takes place. which statement explains the maximum amount of copper that the chemist can extract using this reaction?

Stage in which a typical star has completely stopped fusion