Answer:
A) B has more electron shells then A
Step-by-step explanation:
Element A is flourine
Element B is chlorine
Chlorine has three electron shells and flourine only has 2 electron shells (on Bohr model)
Chlorine's outer shell has 7 electrons and so does flourines outer shell(on bohr model)
Sense Answer A is correct and Answer B is wrong, common snese will tell you that D is wrong sense B is wrong, and sense D is wrong that means only one is right and sense A is correct it makes C wrong