Question

If the principal quantum number $n=6,$ the correct sequence of filling of electrons will be :

• A. $ns\to np\to (n-1)d\to (n-2)f$
• B. $ns\to (n-2)f\to (n-1)d\to np$
• C. $ns\to (n-1)d\to (n-2)f\to np$
• D. $ns\to (n-2)f\to np\to (n-1)d$

Answer 1

Answer: (B)

If the principle quantum number $n=6$, the correct sequence of filling of electron will be $ns\to (n-2)f\to (n-1)d\to np$
Here, $n=6$. Hence, the correct sequence of filling of electron will be $6s\to 4f\to 5d\to 6p$.