I needed some help on these two questions because I SEEM to get confused on how to assign the principal quantum number to certain electrons, especially when the element is located in the d BLOCK of the periodic table. Could someone pls explain this to me and how to specifically do 21 a and c and all of 27. Thanks!the problems are 2.21 What are the principal and ORBITAL angular momentum quantum numbers for each of the following orbitals: (a) 6p; (b) 3d; (c) 2p; (d) 5f?2.27 Write the subshell notation (3d, for instance) and the number of orbitals having the following quantum numbers: (a) n = 5, l = 2; (b) n = 1, l= 0; (c) n = 6, l = 3; (d) n = 2, l =1.TopExplanation:As an example of 3dthis is another way of writing (n)(l)since n = 3 and l = 2 = dfor all angular momentum quantum numbers we havel=0; sl=1; pl=2; dl=3; fl=4; gfor the first question (a) 6p; (b) 3d; (c) 2p; (d) 5f(a) n =6 and l = 1(b) n = 3 and l = 2(c) n = 2 and l = 1(d) n = 5 and l = 3For part two we work in reverse (a) n = 5, l = 2; (b) n = 1, l= 0; (c) n = 6, l = 3; (d) n = 2, l =1.(a) 6d(b) 1s(c) 6f(d) 2p