Explain and answer with notes and equations Which molecule or ion does not have

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Explain and answer with notes and equations

Which molecule or ion does not have a trigonal pyramidal molecular geometry?

a) NI3

b) PO33–

c) SO32–

d) BF3

e) XeO3

Which molecule or ion has a trigonal pyramidal molecular geometry?

a) C2H4

b) CH3+

c) H2CO

d) H2CCO

e) CH3–

Which molecule or ion has a trigonal pyramidal molecular geometry?

a) CO32–

b) SO3

c) BF3

d) C2H4

e) SO32–

Which molecule or ion is nonlinear?

a) CO2

b) HCCH

c) NF2–

d) NO2+

e) OCN–

Which molecule or ion is nonlinear?

a) N2O.

b) NO2+.

c) CS2.

d) OCN–.

e) O3.

The approximate CCO angle in acetone,

a) 60°.

b) 90°.

c) 109°.

d) 120°.

e) 180°.

The approximate H—C—H bond angle in CH3+ is

a) 60°.

b) 90°.

c) 109°.

d) 120°.

e) 180°.

The molecule AX3, in which A is the central atom, is polar and obeys the octet rule; therefore,

a) A has no lone pairs.

b) A has one lone pair.

c) A has two lone pairs.

d) A has three lone pairs.

e) A has four bonding pairs.

What is the O—N—O bond angle in the nitrite ion?

b) 109°

c) 120°

d) 180°

e) 180° and 90°

Which molecule does not have a planar molecular geometry?

a) C2F4

b) HCCH

c) SO3

d) N2H4

e) HNNH

The molecular geometry of the CH3– ion is

a) square pyramidal.

b) tetrahedral.

c) trigonal planar.

d) trigonal pyramidal.

e) square planar.

Which molecule or ion does not have a trigonal pyramidal molecular geometry?

a) NF3

b) IO3–

c) PF3

d) BF3

e) AsF3

13. In arrangement.

phosgene, COCl2, the electron groups are located about the central carbon atom in a ______________

a) pyramidal

b) tetrahedral

c) trigonal planar

d) trigonal bipyramidal

e) square planar

What is the molecular geometry of the bromate ion, BrO3–? a) square pyramidal

b) tetrahedral
c) trigonal planar
d) trigonal pyramidal e) square planar

Which of the following statements correctly describes the reaction of BF3 with NH3 to form F3B–NH3?

a) Nitrogen changes from trigonal planar to tetrahedral geometry during the reaction.

b) Boron changes from trigonal planar to tetrahedral geometry during the reaction.

c) Both nitrogen and boron change from trigonal planar to tetrahedral geometry during the reaction.

d) There is no change in geometry.

e) There are no changes in the formal charge during the reaction.

Which of the following characteristics does not apply to PF3?

a) one lone pair of electrons on phosphorus

b) polar molecule

c) contains polar bonds

d) trigonal planar

e) has three bonds

17. What
a) 180°

is the H—C—C bond angle in ethylene, H2CCH2?

b) 120°

c) 90°

d) 109°

e) slightly less than 120°

is the molecular geometry of the ICl4– ion?

18. What
a) square planar

b) tetrahedral

c) octahedral

d) rectangular

e) pentagonal

Which of the following molecules is nonpolar?

HF

CC

a)H H HH

CC

b)H F HF

CC

c)H F HF

CC

d)F H HH

CC

e)F F

Which of the following molecules is nonpolar?

a) HF

b) ICl3

c) NF3

d) SF4

e) BF3

Which of the following molecules does not have a permanent dipole moment?

a) water, H2O

b) acetone, CH3COCH3

c) carbon dioxide, CO2

d) sulfur dioxide, SO2

e) chloromethane, CH3Cl

Which of the following statements best describes N2O?

a) The molecular geometry is linear and the molecule is polar.

b) The molecular geometry is bent and the molecule is nonpolar.

c) The molecular geometry is bent and the molecule is polar.

d) The molecular geometry is linear and the molecule is nonpolar.

e) The molecular geometry is trigonal planar and the molecule is nonpolar.

Which of the following molecules is nonpolar?

a) ClF3

b) PF3

c) PF5

d) SF4

e) CH2F2

When a carbon atom has sp3 hybridization, it has

a) four bonds.

b) three bonds and one bond.

c) two bonds and two bonds.

d) one bond and three bonds.

e) four bonds.

The hybridization of the central atom in a molecule is described as sp2. The arrangement in space of the hybrid orbitals about that atom is

a) linear.

b) trigonal planar.

c) tetrahedral.

d) trigonal bipyramidal.

e) octahedral.

Which of the following statements is incorrect regarding the water molecule?

a) The molecule is polar.

b) The hybridization of oxygen is sp3.

c) There are two lone pairs and two bonding pairs on the central atom.

d) The molecular geometry is bent.

e) The hybridization of hydrogen is sp.

Which of the following statements is true?

a) A bond is twice as strong as a single bond.

b) A bond has cylindrical symmetry about the bonding axis.

c) A double bond consists of a bond and a bond.

d) A bond results from the sideways overlap of hybridized orbitals.

e) Abondistwiceasstrongasabond.

28. Which of the following molecules contains an sp3-hybridized carbon atom?

H HCCCH

H HH

CC

b)H H HH

CCC c)H H

H

CO

d) H

HCCH

a)

e)

What

a) s

b) sp

c) sp2

d) sp3

e) sp3d

According to valence-bond theory, the bonding in ketene, H2CCO, is best described as

a) five bonds.

b) four bonds and two bonds.

c) five bonds.

d) four bonds and one bond.

e) three bonds and two bonds.

Explanation / Answer

1(D) because BF3 doesn't have lone pair of electron. So having plane triangular geometry with 6 valence electrons.

2 (E) CH3- because carbon atom has 8 valence electrons with lone lone pair, has pyramidal geometry.

3 (E) SO3-- , because S atom has lone pair of electron.

4 (C) NF2- because N atom has 2 lone pair of electrons, having bend shape.

Sorry for rest questions , as per Chegg policy only 4 questions will be answered at a time.

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