28.)Compound A is a solid with a melting point of 85degreesC, and compound B is

Question

28.)Compound A is a solid with a melting point of 85degreesC, and compound B is a gas at 75degrees C and one atmosphere pressure. based on these data,one would expect 29.) which of the following contains an atom that does not obey the octet rule? 30.) Based on VSEPR theory, which should have the smallest XAX bond angle? marge D) 3- charge. 28. Compound A is a solid with a melting point of85°C, and compound is a gas at 75oC and one atmosphere pressure. Based on these data, one would expect A) both compounds to be covalent. B) com pound A to be ionic and compound B to be covalent compound A to be covalent and compound B to be ionic. D) both compounds to be ionic. 29. Which of the following contains an atom that does not obey the octet rule? A) LiBr B) CO2 C) PC13 D) CCl4 30. Based on VSEPR theory, which should have the smallestXAx bond angle? B) 31. What is the molecular geometry of CH3-? A) T-shaped B) tetrahedral C) trigonal planar D) trigonal pyramidal a molecular geometry that is 32. Which of the following best describes CO2? It has A) linear molecular shape with no lone pairs on the I atom. B linear molecular shape with lone pairs on the I atom.

Explanation / Answer

28.) answer is option A) both compounds to be covalent

ionic compound have high boiling and melting point (example NaCl melt at 800 deg Celusius)

29) answer is option A) LiBr

around lithium there is no eight electron

30) answer is option C) X-A-X

it will have 104 degree which is smallest bond angle when compare to other compound. due to lone pair - lone pair replusion

31) answer is option D) trigonal pyramidal

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