Question

Which compound contains both ionic and covalent bonds? NaCN b) Naci c) HCI d) e) SO, CO2 13) The following equations represent the formation of compound MX. What is the oH for the electron affinity of X (8)? X: (8) ► 2x () AH = 60 kJ/mol M(s) → MB) AH = 22 kJ/mol M (8) ► M' (g) + e- AH = 118 kl/mol X (8) + e. → X (g) AH = ? M' (g) + x (8) ► MX (s) AH = -190 kJ/mol AH = -100 kl/mol b) -80 kJ -30 kj -20 kj 20 kj 156 kJ 14) A covalent bond is the result of the a) overlap of two half-filled s orbitals b) overlap of a half-filled s orbital and a half-filled p orbital C) overlap of two half-filled p orbitals along their axes d) parallel overlap of two half-filled parallel p orbitals e) all of the above Which pair of species is isoelectric? a) Brand I b) Na and K c) Cl and Ar d) Cland K e) K and Ca?

Answer 1

@ es correct Answer. Na-CEN ionic Conalent Bond ① na-ce I only ionic Bond © H-ce "only conalent Bend @ 0=c=02 @ 0=550) Bonds. Bonds All are conelent 3 09 - 2xg) OH = 60 kJ/mol. But we only need one atom. ago, this Reaction 1 X 2 (g) Xgo DH 230 kJ 1 mol M(S) - MLG) AH = 22 kJ/mol myo mtegté DH = 118 kJ/mol Xegotes Xog, DH 2 ? Me Gif X g) ~ MX (8) OH = -190 kJ 1 met Adding all these enthalpies ; 30 + 22 + 118 + 8 +1-190) = -100 ks mol 170+? -190 ,- low ?-20.7 -eno 1?2-80 kJ mot obtion @ cis correct Answer