Select Chapter Topics: 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 |
67%
From NCERT
NEET - 2023
Hints

Amongst the following, the total number of species NOT having eight electrons around the central atom in its outermost shell, is:
$$\mathrm{NH}_3, \mathrm{AlCl}_3, \mathrm{BeCl}_2, \mathrm{CCl}_4, \mathrm{PCl}_5$$

1.  1
2.  3
3.  2
4.  4  Subtopic:  Octate, Isoelectronic Species, Lewis Structure & Formal Charge |
57%
From NCERT
NEET - 2023
Hints

The correct order of dipole moments for molecules $$NH_3, H_2S , CH_4$$ and $$HF$$ is :
 1 $$\mathrm{CH}_4>\mathrm{H}_2 \mathrm{~S}>\mathrm{NH}_3>\mathrm{HF}$$ 2 $$\mathrm{H}_2 \mathrm{~S}>\mathrm{NH}_3>\mathrm{HF}>\mathrm{CH}_4$$ 3 $$\mathrm{NH}_3>\mathrm{HF}>\mathrm{CH}_4>\mathrm{H}_2 \mathrm{~S}$$ 4 $$\mathrm{HF}>\mathrm{NH}_3>\mathrm{H}_2 \mathrm{~S}>\mathrm{CH}_4$$  Subtopic:  Polarity |
62%
From NCERT
NEET - 2023
Hints

Which one of the following represents all isoelectronic species?
1. $$Na^+ , Cl^-, O^- , NO^+$$
2. $$N_2O, N_2O_4 , NO^+, NO$$
3. $$Na^+ , Mg^{2+} , O^- , F^-$$
4. $$Ca^{2+} , Ar, K^+, Cl^-$$  Subtopic:  Octate, Isoelectronic Species, Lewis Structure & Formal Charge |
73%
From NCERT
NEET - 2023
Hints

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
Hints

Which among the following is an incorrect statement?

 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 |
75%
From NCERT
NEET - 2022
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NEET 2023 - Target Batch - Aryan Raj Singh
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To view explanation, please take trial in the course.
NEET 2023 - Target Batch - Aryan Raj Singh

Amongst the following, which one will have maximum 'lone pair - lone pair' electron repulsions?

1. $$XeF_2$$
2. $$CIF_3$$
3. $$IF_5$$
4. $$SF_4$$  Subtopic:  V.S.E.P.R & V.B.T |
72%
From NCERT
NEET - 2022
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NEET 2023 - Target Batch - Aryan Raj Singh

Which one of the following statements is true about the structure of $$CO^{2-}_3$$ 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 |
53%
From NCERT
NEET - 2022
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To view explanation, please take trial in the course.
NEET 2023 - Target Batch - Aryan Raj Singh

Which one of the following is the correct order of decreasing bond enthalpies for the given species?

1.  $$O^{2-}_2>O^-_2>O_2>N_2$$
2.  $$N_2>O_2>O^{2-}_2>O^-_2$$
3.  $$N_2>O_2>O^-_2>O^{2-}_2$$
4.  $$O_2>N_2>O^-_2>O^{2-}_2$$  Subtopic:  M.O.T |
70%
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 |
64%
From NCERT
NEET - 2022
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NEET 2023 - Target Batch - Aryan Raj Singh

Select Chapter Topics: 