How to ionic bond Ra + I

Ra+ + I- = RaI

Ra (radium) is positively charged as it is metal whereas I (iodine) has a negative charge as it in non metal.

Evaporation: this is when warmth from the sun causes water from oceans, lakes, streams, ice and soils to rise into the air and turn into water vapour (gas). water vapour droplets join together to make clouds! condensation: this is when water vapour in the air cools down and turns back into liquid water.

The correct answer is "atomic weight".