4d, 5p, 5f and 6p orbitals are arranged in the order of decreasing energy. The correct option is :

Question

1. 5f > 6p > 5p > 4d 2. 6p > 5f > 5p > 4d 3. 6p > 5f > 4d > 5p 4. 5f > 6p > 4d > 5p

Doubtly AI · Accepted Answer

Answer: 1. 5f > 6p > 5p > 4d Orbital energy in a many-electron atom follows the (n+l) rule; if (n+l) is equal, the orbital with lower n has lower energy. Orbitaln + l 4d4 + 2 = 6 5p5 + 1 = 6 6p6 + 1 = 7 5f5 + 3 = 8 So 5f (8) is highest, then 6p (7), then 5p and 4d (both 6; 4d has the lower n so it is lower). Decreasing order: 5f > 6p > 5p > 4d, option (1).

4d, 5p, 5f and 6p orbitals are arranged in the order of decreasing energy. The correct option is :

1 answer

Your answer