Assertion (A ): The19^(th)electronin potassiumatom enetersinto4s-orbitalandnotthe 3d-orbital Reason (R: (n + l)ruleis followedfordeterminingthe orbitalof the lowestenergystate. Thecorrectchoice is

Assertion (A ): The19^(th)electronin potassiumatom enetersinto4s-orbit

1.	Assertion (A ): The19^(th)electronin potassiumatom enetersinto4s-orbitalandnotthe 3d-orbital Reason (R: (n + l)ruleis followedfordeterminingthe orbitalof the lowestenergystate. Thecorrectchoice is
Answer» Both (A)and (R ) are TRUE and (R )is thecorrectexplanation of(A ) both (A)and (R )are truebut (R )is not thecorrectexplanationof (A ) (A) istruebut (R ) ISNOT true (A )is not truebut (R ) is true ANSWER :A