Need Help with Chemistry work.

1 which of the following situations best describes an ionic bond?2 atoms gain electrons and an electostatic force attracts themone atom gains an elctron while the other atoms loses an electron and an electrostsic force repels themone atom gains an electron while the other atom loses an electron and an electrostatic force attaracts them2 atoms each give up an electron and an electrosatsic force attacts them2 which of the following pairs of elelments would most likely form a saltNa and CaH an HeCa and BrCl and Fl3 a salt forms in the reaction of barium with chlorine what is the most likely formula unit of this saltBaClBaCl2BaCl3Ba2Cl4 which of the following would have an electrostsic force of attraction between themNa+ and NeBr- and O2-Na+ and K+K+ and O2-5 soldium flourine is a common ingedient in toothpaste what is the most likely formula unit of saltNaF2NaFNaF3Na2F