Assertion : The 19^th electron in potassium atom enters into the 4s-orbital and not into the 3d-orbital.
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(n + l) rule is followed for determining the orbitals of the lowest energy state
(a) Both A and R are true and R is the correct explanation of A
(b) Both A and R are true but R is not correct explanation of A
(c) A is true but R is false
(d) A and R are false
(a) Both A and R are true and R is the correct explanation of A
(b) Both A and R are true but R is not correct explanation of A
(c) A is true but R is false
(d) A and R are false
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