Title مكمل فاينل كيم 1 new.pdf ✅

أسامة أبوعوض 1 Chemistry General أسامة أبوعوض 1 Chemistry General مكمل األسئلة Final Material Q1 ) What is the total lone pair in NO2 - ? A ) 6 B ) 12 C) 10 D ) 4 E ) 8 Q2 ) The best lewis structure of NCO- has A ) a double bond between N and C atoms & a double between C and O B ) a single bond between N and C atoms & a single between C and O C ) a triple bond between N and C atoms & a double between C and O D ) a triple bond between N and C atoms & a single between C and O Q3 ) Place the following in order decreasing dipole moment I ) PCl3 II ) PIF2 III ) PClF2 A ) II > I > III B ) III > II > I C ) I > II > III D ) II > III > I
أسامة أبوعوض 1 Chemistry General أسامة أبوعوض 1 Chemistry General Q4 ) For ICl4 - ion . the electron domain geometry and the molecular geometry respectively A ) octahedral , trigonal bipyramidal B ) octahedral , square planner C ) trigonal bipyramidal, bent D ) trigonal bipyramidal, linear Q5 ) What is the hybridization of P in PCl3 ? A ) SP3 B ) SP3 d C ) SP3 d 2 D ) SP2 Q 6 ) Place the following in order of decreasing X-A-X , where A central atom and X the outer atoms in each molecules : I ) N2O , II ) NCl3 , III ) NO2 - A ) II > I > III B ) III > II > I C ) I > III > II D ) I > II > III Q 7 ) The bond order of H2 , H2 + and H2 - respectively is : A ) 1,0.5,0.5 B ) 0.5 ,1.5 , 0.5 C ) 1 , 0.5 , 1.5 D) 1 , 1 , 1 Q8 ) What is the enthalpy change for the given reaction? CH3CH3 + Cl2 → CH3CH2Cl + HCl A ) -233 B ) 233 C ) 466 D ) -466
أسامة أبوعوض 1 Chemistry General أسامة أبوعوض 1 Chemistry General Q9 ) The total number of electron pairs in the Lewis structure of F2 molecule is : A ) 7 pairs, 1 bonding and 3 non-bonding B ) 7 pairs, 1 bonding and 6 non-bonding C ) 4 pairs, 1 bonding and 3 non-bonding D ) 8 pairs, 4 bonding and 4 non-bonding Q10) The most polar bond in the following pairs of atoms would be? A) B –C B)C - C C) Si - O D) C – N Q11 ) The number of valence electron in nitrate ion NO3 - is ? A ) 23 B ) 26 C) 18 D) 24 Q12 ) The number of lone electron pairs in the N2molecule is ___. A) 1 B) 3 C) 2 D) 4 E) 5 Q13 ) Which molecule does not contain a double bond? A) CO2 B) CH2O C) O2 D) HCN