Question

what is the maximum number of d orbitals in a principal energy level? 2 1 5 3

Explanation:

In atomic structure, for a given sub - shell (here, the d sub - shell), the number of orbitals is determined by the magnetic quantum number \(m_l\). For the d sub - shell, the angular quantum number \(l = 2\). The magnetic quantum number \(m_l\) can take values from \(-l\) to \(+l\) including \(0\). So, \(m_l=- 2,-1,0,1,2\). Each value of \(m_l\) corresponds to one orbital.

Answer:

5