Question

When 3d orbital is completely filled, the next electron will enter the :

• A. 3p - orbital
• B. 4p - orbital
• C. 4s - orbital
• D. 4d - orbital

Answer 1

Answer: (B)

4p - orbital

When 3d orbital is completely filled, the next electron will enter the 4p - orbital

e order of filling is said to be obtained by starting at the top of the diagram and following the arrows. This process gives the order of filling of orbitals with electrons according to this sequence:

$1s>2s>2p>3s>3p>4s>3d>4p>5s>4d$