Question

Which electron configuration exhibits the ground-state electron configuration for molybdenum (element 42)?

Answer 1

Molybdernum, Mo has atomic number 42. Hence 42 electron.


...in shorthand: [Kr] 5s2, 4d4 
...or in full: 1s2, 2s2, 2p6, 3s2, 3p6, 4s2, 3d10, 4p6, 5s2, 4d4