Question

A,B,C and D has electronic configaration (Z-1),(Z-3),Z and (Z+2). C is a element of third period and group no 18.which shape is lowest.
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Answer 1

Answer:

C is argon Ar

A is chlorine Cl

B is Phosphorus P

D is calcium Ca

If u mean element which is lowest it is calcium (D) according to group