JEE MAIN - Chemistry (2004 - No. 56)
Consider the ground state of Cr atom (Z = 24). The number of electrons with the azimuthal quantum numbers, l = 1 and 2 are respectively
16 and 4
12 and 5
12 and 4
16 and 5
설명
Electronic configuration of Cr (Z = 24) =
1s2 2s2 2p6 3s2 3p6 4s1 3d5
For 2p6 and 3p6 , l = 1. Here in 2p and 3p orbital total 6 + 6 = 12 electrons present.
For 3d5 , l = 2. Here in 3d orbital total 5 electrons present.
1s2 2s2 2p6 3s2 3p6 4s1 3d5
For 2p6 and 3p6 , l = 1. Here in 2p and 3p orbital total 6 + 6 = 12 electrons present.
For 3d5 , l = 2. Here in 3d orbital total 5 electrons present.