The correct order of energies of molecular orbitals of N2 molecule is:
 1 $$\sigma \text { 1s }<\sigma^* \text { 1s }<\sigma 2 s<$$ $$\sigma^* 2 s<\left(\pi 2 p_x=\pi 2 p_y\right)<$$ $$\left(\pi^* 2 p_x=\pi^* 2 p_y\right)<\sigma 2 p_z<\sigma^* 2 p_z$$ 2 $$\sigma \text { 1s }<\sigma^* \text { 1s }<\sigma 2 s<\sigma^* 2 s<$$ $$\left(\pi 2 p_x=\pi 2 p_y\right)<$$ $$\sigma 2 p_z<\left(\pi^* 2 p_x=\pi^* 2 p_y\right)<\sigma^* 2 p_z$$ 3 $$\sigma \text { 1s }<\sigma^* \text { 1s }<\sigma 2 s<\sigma^* 2 s<\sigma 2 p_z<$$ $$\left(\pi 2 p_x=\pi 2 p_y\right)<$$ $$\left(\pi^* 2 p_x=\pi^* 2 p_y\right)<\sigma^* 2 p_z$$ 4 $$\sigma \text { 1s }<\sigma^* \text { 1s }$$ $$<\sigma 2 s<\sigma^* 2 s<\sigma 2 p_z<$$ $$\sigma^* 2 p_z<\left(\pi 2 p_x=\pi 2 p_y\right)<$$ $$\left(\pi^* 2 p_x=\pi^* 2 p_y\right)$$
Subtopic:  M.O.T |
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From NCERT
NEET - 2023
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Given the following five species:
$$\mathrm{NH}_3, \mathrm{AlCl}_3, \mathrm{BeCl}_2, \mathrm{CCl}_4, \mathrm{PCl}_5$$
The total number of these species that do not have eight electrons around the central atom in its/their outermost shell, is/are:
 1 1 2 3 3 2 4 4
Subtopic:  Octate, Isoelectronic Species, Lewis Structure & Formal Charge |
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NEET - 2023
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The correct order of dipole moments for molecules $$NH_3, H_2S , CH_4$$ and $$HF$$ is :
 1 $$CH_4>H_2S>NH_3>HF$$ 2 $$H_2S>NH_3>HF>CH_4$$ 3 $$NH_3>HF>CH_4>H_2~S$$ 4 $$HF>NH_3>H_2S>CH_4$$
Subtopic:  Polarity |
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From NCERT
NEET - 2023
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Which one of the following statements is incorrect related to Molecular Orbital Theory?
 1 The $$\pi^*$$ antibonding molecular orbital has a node between the nuclei. 2 In the formation of a bonding molecular orbital, the two electron waves of the bonding atoms reinforce each other. 3 Molecular orbitals obtained from $$2P_x$$ and $$2P_y$$ orbitals are symmetrical around the bond axis. 4 A $$\pi-$$bonding molecular orbital has larger electron density above and below the internuclear axis.
Subtopic:  M.O.T |
From NCERT
NEET - 2023
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Identify incorrect the statement among the following options:

 1 $$O^+_2$$ ion is diamagnetic. 2 The bond orders of $$O_2^{+},O_2,O^-_2$$ and $$O_2^{2-}$$ are 2.5, 2, 1.5, and 1, respectively. 3 $$C_2$$ molecule has four electrons in its two degenerate $$\pi$$ molecular orbitals. 4 $$H^+_2$$ ion has one electron.
Subtopic:  M.O.T |
78%
From NCERT
NEET - 2022
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Amongst the following, which one will have maximum 'lone pair - lone pair' electron repulsions?

1. $$\mathrm{XeF_2}$$
2. $$\mathrm{CIF_3}$$
3. $$\mathrm{IF_5}$$
4. $$\mathrm{SF_4}$$
Subtopic:  V.S.E.P.R & V.B.T |
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From NCERT
NEET - 2022
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Which one of the following statements is true about the structure of $$\mathrm{CO^{2-}_3}$$ ion?

 1 It can be explained by considering sp3 hybridization. 2 Out of the three C–O bonds, two are longer and one is shorter. 3 It has three Sigma and three $$\pi$$-bonds. 4 All three C–O bonds are equal in length with a bond order in between 1 and 2.
Subtopic:  Resonance & Nature of Compounds |
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NEET - 2022
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Which one of the following is the correct order of decreasing bond enthalpies for the given species?

 1 $$\mathrm {O^{2-}_2>O^-_2>O_2>N_2 }$$ 2 $$\mathrm {N_2>O_2>O^{2-}_2>O^-_2 }$$ 3 $$\mathrm {N_2>O_2>O^-_2>O^{2-}_2 }$$ 4 $$\mathrm {O_2>N_2>O^-_2>O^{2-}_2 }$$
Subtopic:  M.O.T |
72%
From NCERT
NEET - 2022
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The correct order of bond angles in the following compounds/ species is:

1.  $$\mathrm{H}_2 \mathrm{O}<\mathrm{NH}_3<\mathrm{NH}_4^{+}<\mathrm{CO}_2$$
2.  $$\mathrm{H}_2 \mathrm{O}<\mathrm{NH}_4^{+}<\mathrm{NH}_3<\mathrm{CO}_2$$
3.  $$\mathrm{H}_2 \mathrm{O}<\mathrm{NH}_4^{+}=\mathrm{NH}_3<\mathrm{CO}_2$$
4.  $$\mathrm{CO}_2<\mathrm{NH}_3<\mathrm{H}_2 \mathrm{O}<\mathrm{NH}_4^{+}$$
Subtopic:  V.S.E.P.R & V.B.T |
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NEET - 2022
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Match List-I with List-II :
 List-I (Molecules) List-II (Shape) (a) NH3 (i) Square pyramidal (b) ClF3 (ii) Trigonal bipyramidal (c) PCl5 (iii) Trigonal pyramidal (d) BrF5 (iv) T-shape

Choose the correct answer from the options given below:
 (a) (b) (c) (d) 1. (ii) (iii) (iv) (i) 2. (iii) (iv) (ii) (i) 3. (iv) (iii) (i) (ii) 4. (iii) (iv) (i) (ii)
Subtopic:  V.S.E.P.R & V.B.T |
81%
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NEET - 2022
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