Which of the following is(are) correct for if atom ?
`1s lt 2s lt 2p lt 3s lt 3p`
`1s lt 2s = 2p lt 3s = 3p`
`1s lt 2p lt 3d lt 4s`
`1s lt 2s lt 4s lt 3d`
The correct choice is

Which of the following is(are) correct for H atom ? 1s lt 2s lt 2p lt 3s lt 3p 1s lt 2s = 2p lt 3s = 3p 1s lt 2p lt 3d lt 4s 1s lt 2s lt 4s lt 3d The correct choice is

The order of energy of orbitals is s lt p lt d lt f

The order of energy of orbitals is s lt p lt d lt f

Which of the following is/are the correct order of ionic mobility ? (1) Li^+ lt Na^+ lt K^+ (2) Na^+ lt Mg^(2+) lt Al^(3+) (3) Al^(3+) lt Mg^(2+) lt Na^(2+) (4) Li^+ lt Na^+ lt K^+

Which of the following is correct regarding bond angles- I. SO_(2) lt H_(2)O II. H_(2)S lt SO_(2) III. SO_(2) lt H_(2)S IV. SbH_(3) lt NO_(2)^(+)

Four elements P,Q,R & S have ground state electronic configuration as: {:(P rarr 1s^(2) 2s^(2) 2p^(6) 3s^(2) 3p^(3),Q rarr 1s^(2) 2s^(2)2p^(6)3s^(2)3p^(1)),(R rarr 1s^(2) 2s^(2)2p^(6)3s^(2)3p^(6)3d^(10)4s^(2)4p^(3),S rarr 1s^(2)2s^(2)2p^(6)3s^(2)3p^(6)3d^(10)4s^(2)4p^(1)):} Comment which of the following option represent the correct order of true (T) & false (F) statement I size of P lt size of Q II size of R lt size of S III size of P lt size of R (appreciable difference) IV size of Q lt size of S (appreciable difference)

STATEMENT-1: For hydrogen orbital energy increases as 1s lt 2s lt 2p lt 3s lt 3p lt 3d lt 4s lt 4p... STATEMENT-2: The orbital with lower (n+l) value has lesser energy and hence filled up first.

Record the following sets of compounds according to increasing pK_(a)(=-logKa) (a). cyclohexane carboxylic acid (A). 3 lt 2 lt 1 (B). 3 gt 2 gt 1 (C). 1 lt 2 lt 3 (D). 3 lt 1 lt 2 (b). 1-butyne, 1-butene, butane (A). 3 lt 2 lt 1 (B). 3 lt 2 lt 1 (C). 1 lt 3 lt 2 (D). 3 lt 2 gt 1 (c). Propanoic acid, 3-bromopropanoic acid, 2-nitropropanoic acid (A). 3lt2lt1 (B). 3gt2gt1 (C). 1lt2lt3 (D). 3lt1lt2