Which of the following sequence is correct as per Aufbau principle?

Question

Which of the following sequence is correct as per Aufbau principle? (A)  35 text < text 3d text < text 45 text < text 4p  (B)  1s text < text 2p text < text 4s text < text 3d  (C)  2s text < text 55 text < text 4p text < text Sd  (D)  2s text < text 2p text < text 3d text < text 3p

Tardigrade Admin · Accepted Answer

According to aufbau principle, "sub-shells are filled with electrons in the increasing order of their energies," i.e., sub-shell of lower energy will be filled first with electrons. Thus correct order is? 1s<2s<2p<3s<3p<4s<3d<4p <5s<4d<5p<6s<4f<5d<6p <7s<5f<6d... text etc.

Q. Which of the following sequence is correct as per Aufbau principle?

$35 < 3 d < 45 < 4 p$

$1 s < 2 p < 4 s < 3 d$

$2 s < 55 < 4 p < S d$

$2 s < 2 p < 3 d < 3 p$

Q. Which of the following sequence is correct as per Aufbau principle?

35<3d<45<4p

1s<2p<4s<3d

2s<55<4p<Sd

2s<2p<3d<3p

According to aufbau principle, "sub-shells are filled with electrons in the increasing order of their energies," i.e., sub-shell of lower energy will be filled first with electrons. Thus correct order is? 1s<2s<2p<3s<3p<4s<3d<4p <5s<4d<5p<6s<4f<5d<6p <7s<5f<6d...etc.

$35 < 3 d < 45 < 4 p$

$1 s < 2 p < 4 s < 3 d$

$2 s < 55 < 4 p < S d$

$2 s < 2 p < 3 d < 3 p$