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What is the ground state electron configuration for Be+2?
What is the bond order for Be+2?
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- According to Huckel theory, what is the difference in total energy between the anion (C6H6) and the dication (C6H6)2+ of Benzene? In your work, explicitly state which orbitals are occupied in case of the anion and the dictation and what the total energy of each of the two ions is. The total energy difference is defined as AE = Eanion Ea dication· O 2a – 23 O 3a + B O a + B O 2a + 28 3a - BThe existence of compounds of the noble gases was once a great surprise and stimulated a great deal of theoretical work. Sketch the molecular orbital energy level diagram for XeF and deduce its ground-state electron configurations. Is XeF likely to have a shorter or longer bond than XeF+?Give the ground-state electron configurations and bond orders of(i) F2−, (ii) N2, and (iii) O22−.
- is a carbon atom diamagnetic or paramagnetic?The existence of compounds of the noble gases was once a great surprise and stimulated a great deal of theoretical work. Sketch the molecular orbital energy level diagram for XeF and deduce its ground state electron configurations. Is XeF likely to have a shorter bond length than XeF+?Why do third – period elements expand their covalence above four?
- O TE1ll Vol) 13:56 Question 3: What is the best reason for the observation that carbon can form four bonds and no more? * Carbon is in period 2 of the periodic table. Carbon has four valence electrons in the n = 2 energy level. An electron is transferred from the filled 2s orbital to an unoccupied 2p orbital. The energy gap between the n = 1 and n = 2 is large and no further electrons can, therefore, be promoted from lower energy levels to facilitate more bonds. All of the reasons given above explain the observation. Question 4: Select the structures in Figure 4 that are drawn correctly * II ...Use the electron configurations of SO− and SO+ to predict which is likely to have the shorter bond length.Predict the ground electronic state of the He2 +2 ion. What is the bond order? Will it be stable in the ground state?
- N2 and CN' are both isoelectronic. (i) Draw the molecular orbital diagram for N2 and CN molecules. (ii) Explain why CN is a toxic substance but N2 isn't. (iii) N2(g) is an inert gas that is suitable for a wide range of application. Would you expect N2" to be a stable diatomic species in the gaseous state? Explain your answer.Use MO theory to explain the following: O2P * 2p, 2pх 2ру TT 2p 2р, 2рx 2ру 2р, 2рх 2ру 2р, 2рх 2ру O 2P O 2P TT 2p O2s 02s 2s 2s 2s 2s O2s O2s i. The ionization energy of fluorine (F) is ~1700 kJ/mol, while the ionization energy of difluorine (F2) is ~1500 kJ/mol. + iii. The longest wavelength of light that can be absorbed by N2 is ~80 nm, while the longest wavelength of light that can be absorbed by F2 is ~100 nm. (No calculations are required for this). ii. Bez cannot exist, while both Be,* and Be,¯ can exist.Give the ground state electron configuration for O 2⁻. 1s22s22p6 1s22s22p4 1s22s22p3 1s22s22p5 1s22s22p2
