Because the 4d orbital is full with 5 electrons Because the 5sand obits are then half-full Because the 5s orbital is half-ful Just because,OK? Answers: Question I. A 3d orbital has n=3 and I=2.Recall that 0<=I<=n-1. Question 2 There are 5 d-orbitals,regardless of the value of n.Note that three of them are degenerate. Question 3. The n=3 shell holds a maximum of 18 electrons Question 4. This is a 2s orbital.Note the two regions of high electron density. Question 5. There is one nodal plane-horizontal in the orbital as presented. Question 6. ANY orbital can hold a maximum of two electrons. Because the 5s orbital can hold only one electron Because the 4d orbital is full with 5 electrons Because the 5s and 4d orbitals are then half-full Because the 5s orbital is half-full Just because, OK? Answers: Question 1. A 3d orbital has n=3 and l=2. Recall that 0<=l<=n-1. Question 2. There are 5 d-orbitals, regardless of the value of n. Note that three of them are degenerate. Question 3. The n=3 shell holds a maximum of 18 electrons. Question 4. This is a 2s orbital. Note the two regions of high electron density. Question 5. There is one nodal plane - horizontal in the orbital as presented. Question 6. ANY orbital can hold a maximum of two electrons