The atom on gaining an electron to attain the stable configuration and assigned a negative charge. Thus option B is correct.
The atom has been the smallest unit of matter. The atom has been consisted of the centrally charged nucleus and the negatively charged electrons revolving around the nucleus.
The electrons have been filled in the orbitals in the order of their energy level. The electrons have been acquired within the shells to attain a stable configuration.
The atoms on losing an electron in order to attain the stable configuration have been assigned with a positive charge.
The atom on gaining an electron to attain the stable configuration and forms a bond has been assigned with a negative charge. Thus option B is correct.
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