Answer: B). lithium and chlorine
Explanation: An ionic bond is formed between a metal and a non-metal by transfer of electrons from metal to non metal.
Electronic configuration of lithium:
Lithium atom will loose one electron to gain noble gas configuration and form lithium cation with +1 charge.
Chlorine atom has oxidation number of -1.
Electronic configuration of chlorine;
Chlorine atom will gain one electron to gain noble gas configuration and form chloride ion with -1 charge.
combine with
to form lithium chloride