Which ion would you expect to have the larger radius na+ or mg2+

Na+ would be expected to have the largest radius because we are looking at the iconic signs and the Zeff which is the effective nuclear charge, for the ions. Magnesium has more proton than soduim so with the same numbers of electrons and 1s orbital shield, the Zeff for magnesium is greater and therefore Mg2+ has a smaller radius.

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.