Question

please help me! cna you write a detailed explanation for I can apply this to other problems! Thank you for your help!!!

#1) Acidity and reactivity of binary hydrides (i.e. CH4, NH3, H2O, HF) can be assessed w.r.t. proton affinity, ionization energies, basicities, electron affinity, solvent effects, etc. Given the following data (which may or may not help), BRIEFLY discuss the following. (a) What INDUCTIVE EFFECTS you would expect to observe w.r.t. Ionization Energies, P.A., etc. upon going from NH, to NF; (b) What possible RESONANCE EFFECTS one would expect when F is substituted for H in PHz. {Include resonance structures where necessary; EWG, I.E. changes, chg. Localization, sigma & pi-bonding, etc.} NH; NH,- I.E. (eV) P.A. (kJ/mol) E.A. (kJ) 10.2 854 --- HF 16.0 399 1554 1689 --- 328

Answer 1

1 from goint NH₃ to NFZ brat ose Ionisation potential will increases Proton affinity will decreases Electron affinity will increase. In ander explain these trend, we need to consider the analogy of elechonegative groupe pulls electron density towards itself, 7 N HH N-electron rich As here is more et ectronegative so pulls the elechan howards itself. N-electron pour plus Here elechon density is going away from

y so the electron poor NF3 will be cen succeptibl to donate / release its electron and more intent to gain electron. so the electron affinity increases while the proton affinity and (carolves denahan of elechon) decreares and I f increases as it is more difficult to pull the electron from a electron deficient atan. from PH3 to PF3, PFg will have resenance Structures but PH₂ will not have any we know F has 7 elections and hence 3 line pairs after honding with P. Alsop has its vacant d-shifts which can accept a band with the filled ashitah of Fatom. So PF3 will have different resonating structores - F y o xp? ahifal mer d-shifal A bund formation, Resmating strauterer - In pt3 as t does not have the peiss, so dot ait possible possible to to have this kind of structures.