Answer:
Ionic Bond
Step-by-step explanation:
In the diagram, the electrons of Sodium are attracted towards the nucleus of Chlorine because of the more +ve charge there
and the nucleus of Sodium is attracted towards the electrons of Chlorine because of the greater -ve charge
But when these 2 atoms come in contact, the electrons of Sodium cannot reach the nucleus of Chlorine due to repulsion from the Chlorine's electrons
Hence, both the atoms come close to each other at the closest distance the repulsion allows