How do you draw diagram of potassium atom with electrons in their shells?

K* ***I (draw the 7 electrons around the I, i cant because im typing, obviously) [K]+-->[I]- you write + for K because it has lost an electron (and therefore has a charge of 1+) and - for I because it has gained an electron ( and has developed a charge of 1-) this is an ionic bond hope it helps:)