Question

Please answer all 3 questions

Which of the following species has en stor that has a partially filled valence shell of electroni? molecular bromine, Bez fluoride anion, ammonia, NH3 aluminum trichloride, AlCl3 QUESTION 43 What reagents are needed to accomplish this reaction? H2/Pt NaBH, MOH Hp/Lindlar's catalyst LI, ENH2, -78 °C followed by aq. NHACI QUESTION 44 The addition of bromine to the alkene shown will give: Br2 one meso compound one pair of enantiomers two meso compounds four stereoisomers

Answer 1

1) option 4 is correct because in AlCl₃, Al atom is surrounded by 3bond pair of electrons that it has 6electrons only in the valence she'll less than octet hence d is answer

43) option c is correct lindlers catalyst used for partial reduction and it gives cis alkene

44)option 1 is correct a pair of enantiomers are obtained since it is unsymmetrical trans alkene anti addition occurs