Which of the molecules, CO2, H2O, NH3, and BF3, will be polar? Question 18 options: a) CO2, NH3 and BF3 b) CO2, H2O and NH3 c) H2O and NH3 d) CO2 and BF3 e) H2O and BF3
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- Which molecule does NOT have a triple bond? Question 6 options: NO2+ CN– N2(Not Answered) Place the following in order of decreasing X-O bond length ("X" indicates the central atom) Sio,2- Co2 CO2 CO2 > SiO,2- > CO32 Sio3- > cO2 > CO,2 Sio, > co,2 > CO2 (Correct answer) co,?- > cO2 > SiO,2 co,2- > Sio, > cO2 CO2 > Co32 > Sio3?Which of the following molecules/ions have a linear molecular shape? Question 9 options: A) NOCl B) SeF2 C) OCl2 D) BeCl2 E) XeF2
- 1) A molecule that has a single covalent bond is A) Cl2 B) CO2 C) CO 2) How many valence electrons does PO,- has? A) 33 B) 32 C) 34The Lewis structure of SO3 has lone pairs of electrons and_ double bonds. (Note that in SO3 the O atoms are not bonded together.) (A) 6,3 B) 7,2 c) 8,2 D) 8,1Question 1 a) Why is the ionization energy required to remove an outer electron from Na+ so much greater than that needed to remove the outer electron from Na? (HINT: if you’re stuck, draw the orbitals of Na and Na+ to help you visualize) b) What types of bonds are in CN-(sigma vs pi) and what is the hybridization of carbon and nitrogen
- Using VSEPR theory, predict the molecular geometry of the following molecules. (a) HOBr tetrahedral linear trigonal pyramidal trigonal planar angular (b) NBr3 tetrahedral linear trigonal pyramidal trigonal planar angular (c) SiF4 tetrahedral linear trigonal pyramidal trigonal planar angular Submit Answer Try Another Version 10 item attempts remaining Previous Next1a)Which one of the follwoing is a covalent compound? Why? a)CO2 b)AlCl3 c) KBr d) Fe2O3 1b)Which of the following molecue is held together by the strongest bond? Why? a)P2 b)N2 c)I2 d)F21)Which type of bond would be expected in molecule of LiF? A)ionic b) polar covalent c)nonpolar covalent b) none of these 2)which of the following contains a metallic bond? A)NaCI b)SO2 c)Cu-Zn Alloy d) K20 3) which of the following contains an ionic bond? A)NACI b) SO2 C) Cu-Zn Alloy d)CO2
- 2. Draw Lewis Dot Structures for HCN using C as the central ion and using N as the central ion: Which one of these structures is the more probable and why? sitisq 02 (b qWhich of the molecules/ions below have a linear electron-pair geometry? Question 6 options: A) COS B) CS2 C) I3- D) NOCl E) O3Draw the Lewis structure of BCl₃ and then choose the appropriate number of valence electrons on the central atom. A) 6 B) 8 C) 9 D) 7 E) 10