Give two tetrahedral compounds (give chemical formula and structure) with μ = OD but one molecule has a central atom being partly negative (8) whereas in the other compound the central atom is partly positive(8*). (4)
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- Identify the type of hykidization isip, sp², sp³) for all N (NITROGEN) atoms of the following compound.Select one: True or False 1-The mesomeric form of succimer is the active chelating form that is used to chelate trivalent metals through its COOH groups. 2-Anions with large radius particularly those having less than two negative charge are more easily polarized by the small size cations while those of ≥1 charge like sulfide S-2 and selenium Se-2 are much harder to be polarized 3-Covalent bond is encountered in case of NaCl and KBr while ionic bond is encountered with BeCl2 and BF3 4- Besides providing the largest suitable number of valance orbitals for covalent bond formation it can determine the final shape of the molecule for example Sp hybridization leads to a diagonal planner molecule, SP2 hybridization while Sp3 hybridization leads a pyramidal (tetrahydral shape) 5-About the underlying compound ( in the images ) , it it’s a calcium complex of EDTA used to treat metal toxicities like pulmbism in order to avoid hypocalcaemia.Given: 2 H2 + O2 yields 2 H2O, Delta H = -483.6 kJ/mol What is the enthalpy for the following reaction? H2O yields H2 + 1/2 O2
- The dissociation of H3 AsO4 to H3 O+ and AsO43-Iodine azide, IN3 , adds to alkenes by an electrophilic mechanism similar to that of bromine. If a monosubstituted alkene such as 1-butene is used, only one product results: REFER IMAGE (a) Add lone-pair electrons to the structure shown for IN3 , and draw a second resonance form for the molecule.(b) Calculate formal charges for the atoms in both resonance structures you drew for IN3 in part (a).(c) In light of the result observed when ΙÎ�3 adds to 1-butene, what is the polarity of the I—N3 bond? Propose a mechanism for the reaction using curved arrows to show the electron flow in each stepIn which of these two hydrides:NH3or SbH3,would you expect a greater distortion from the normal tetrahedral bond angle of 109°? And give reason for your answer
- Rank the given compounds in increasing order based on the property. (1 = lowest)The [a] of pure quinine, an antimalarial drug, is -165.(a) Compare the bond enthalpies (Table 8.3) of the carbon–carbon single, double, and triple bonds to deduce an averageπ -bond contribution to the enthalpy. What fraction ofa single bond does this quantity represent? (b) Make a similarcomparison of nitrogen–nitrogen bonds. What do youobserve? (c) Write Lewis structures of N2H4, N2H2, and N2,and determine the hybridization around nitrogen in eachcase. (d) Propose a reason for the large difference in yourobservations of parts (a) and (b).
- Compound A, shown below, is a developmental drug used for the treatment of gastrointestinal disorders. a) List all atoms present in compound A and rank them in order of increasing electronegativity (including the electronegativity values to 2 dp). c) By drawing on the diagram of compound A below, draw the expected polarity of each non C-H and C-C bond found in compound A.C and S are always tetravalent but Ge, Sn And Pb show divalency. Why?Suppose a chloride ion and a sodium ion are separated by a center–centerdistance of 5 Å. Is the interaction energy (the energy required to pull theminfinitely far apart) predicted to be larger if the medium between them iswater, or if it is n-pentane? (as shown)If Ca2+, Na+, and F- each have ionic radii ~1.16. Which ionic bond is stronger: Ca-F or Na-F?If Ca2+ is often bound on the surface of a protein by carboxylic acid functional groups. If the pKa of a particular -COOH group is 4.2, wouldyou predict Ca2+ to be most tightly bound at pH 8, pH 4.2, or pH 3? Explain your answer.