Question

(A) Both assertion and reason are correct statements, and reason is the correct
explanation of the assertion.
(B) Both assertion and reason are correct statements, but reason is not the
correct explanation of the assertion.
(C) Assertion is correct, but reason is wrong statement.
(D) Assertion is wrong, but reason is correct statement
into Asorbital and not ir
Assertion: The 19th electron in potassium atom enters into 4s-orbital and not in
the 3d-orbital.
Reason: (n+1) rule is followed for determining the orbital of lowest energy state.​

Answer 1

Explanation:

(B) is correct option

because in this case the n+l value is same for both 4s and 3d

so electron goes into the orbital with highest n value