Question

Which of the following electronic configuration is incorrect?

(1) 182, 2s°, 2p,2, 2p?, 2p?, 3s², 3p,'

1s, 2s', 2p,', 2p,', 2p,'

(3) 152, 252, 2p 3s2, 3p6, 3d, 4s2

(4) 1s°, 252, 2pº, 3s², 3p,', 3p,', 3p,'​

Answer 1

Answer:

The electron configuration of an atom shows the number of electrons in each sublevel in each energy level of the ground state atom.

Here, 1s

2

2s

2

2p

6

3s

2

3p

2

3d

5

4s

1

is ground state electronic configuration of Cr.