Question

Which of the following, if any, is the correct ground state electron configuration for Cr? O [Ne) 45 13d 5 or 15 225 22p 63s 23p 645 13d 5 O [Ar] 45 13d 5 or 15 225 22p 635 23p 64s 13d 5 O [A] 45 230 4 or 15 225 22p 63s 23p 645 230 4 O [Ar] 45 13d 6 or 15 22s22p 63s 23p 645 13d 6 O None of the above

Answer 1

can con Chocomeum (er) has electron NO. 24. 24. So so we write its electron figuration 15225²206 35² 306 325 451 or [A] 3d5451 As As has 18 elections. 18 + 6 = 24 Option 1 and 4 are incorrect as they are not 24 electron Count. There is a possibility for option 3 but [Ar] 48²d4 is not correct because one 4s² election will jump into 3d 4 to attain stable 3ds configuration so correct ansin: [Ar] 457 325 or 15 ²25 ²26 35² 3p6452 Coption 2 45² 325