Worksheet: Linking Hybridization to Geometry and Oxidation State

In this worksheet, we will practice linking the hybridization of an atom in a molecule to the oxidation state and geometry of bonds and electron pairs.

Q1:

An atom of a main-group element forms three bonds and has three nonbonding electron pairs.

What is the hybridization of this atom?

  • Asp
  • Bsp3d2
  • Csp3d
  • Dsp3
  • Esp2

Which term describes the bonding geometry in this molecule?

  • ATrigonal pyramidal
  • BT-shaped
  • CTrigonal planar
  • DSquare planar
  • ESeesaw

Which term describes the geometry of the electron pairs around the main-group atom?

  • ATetrahedral
  • BTrigonal planar
  • COctahedral
  • DTrigonal prismatic
  • ETrigonal bipyramidal

Q2:

Sulfuric acid is manufactured by the following series of reactions.

  • Step 1: S()+8O()8SO()822sgg
  • Step 2: 2SO()+O()2SO()223ggg
  • Step 3: SO()+HO()HSO()3224gll

Which of the following is closest to the bond angle in S8?

  • A104.5
  • B120
  • C90
  • D109.5
  • E180

Which of the following is closest to the bond angle in SO2?

  • A90
  • B120
  • C180
  • D109.5
  • E104.5

Which reactions have no effect on the hybridization of the S atom?

  • AStep 3 only
  • BNone of the steps
  • CStep 1 only
  • DStep 2 only
  • EAll of the steps

Q3:

Potassium dichromate is an oxidizing agent commonly used in organic synthesis.

What is the formula of potassium dichromate?

  • AKCrO227
  • BKCrO3
  • CKCrO26
  • DKCrO24
  • EKCrO224

What is the oxidation state of chromium in the dichromate ion?

  • A+3
  • B+4
  • C+5
  • D+7
  • E+6

What is the hybridization of chromium in the dichromate ion?

  • Asp3d2
  • Bsp2d
  • Csp3d
  • Dsd3
  • Esd4

What is the bonding geometry around a chromium atom in a dichromate ion?

  • ATetrahedral
  • BTrigonal planar
  • COctahedral
  • DSquare planar
  • ETrigonal pyramidal

Q4:

Boric acid, HBO33, is a Lewis acid but not a Brønsted–Lowry acid. The compound increases the pH of a solution by reacting with water as shown in the equation. HBO+HOX+H332+

Identify the species X.

  • AHBO542
  • BHBO342
  • CHBOH33+
  • DHBO44
  • EHBO23

What is the geometry around the boron atom in species X?

  • ATrigonal bipyramidal
  • BOctahedral
  • CTetrahedral
  • DSquare planar
  • ETrigonal pyramidal

What is the hybridization of the boron atom in species X?

  • Asp3d2
  • Bsp2
  • Csp3
  • Dsp3d
  • Esp

Q5:

Iodine heptafluoride can be produced by the reaction of fluorine with iodine pentafluoride at high temperature as shown in the equation. F()+IF()IF()257ggg

What is the hybridization of the I atom in IF5?

  • Aspd
  • Bsd
  • Cspd
  • Dspd
  • Esd

What term describes the bonding geometry in IF5?

  • ATrigonal bipyramidal
  • BPentagonal planar
  • CTrigonal prismatic
  • DSquare pyramidal
  • EOctahedral

What is the smallest angle between IF bonds in IF7?

What term describes the bonding geometry in IF7?

  • ATrigonal bipyramidal
  • BPentagonal pyramidal
  • COctahedral
  • DSquare antiprismatic
  • EPentagonal bipyramidal

Q6:

Nitrogen dioxide contains an unpaired electron and has trigonal planar electron-pair geometry.

Which type of hybridized orbital does the unpaired electron occupy?

  • Asp2
  • Bsp3d2
  • Csp3d
  • Dsp
  • Esp3

Which term best describes the magnetic behavior of this molecule?

  • ANonmagnetic
  • BAntiferromagnetic
  • CParamagnetic
  • DFerromagnetic
  • EDiamagnetic

Q7:

Which of the following accurately represents the molecular geometry for the carbon atoms in CH26 (ethane), CH24 (ethene), and CH22 (ethyne)?

  • ATetrahedral, planar, and linear respectively
  • BLinear, linear, and planar respectively
  • CTetrahedral, linear, and planar respectively
  • DLinear, tetrahedral, and planar respectively

Q8:

A match may be ignited by the reaction of ClO3 and PS43 when the match is struck. The Lewis structures of these species are as shown.

PPSPSPSClOOO

Which term best describes the bonding geometry around the P atoms in PS43?

  • ATetrahedral
  • BTrigonal pyramidal
  • CTrigonal planar
  • DT-shaped
  • EBent

Which term best describes the geometry of the electron pairs around the Cl atom in ClO3?

  • ASquare planar
  • BTrigonal planar
  • CSeesaw
  • DTrigonal pyramidal
  • ETetrahedral

What is the hybridization of the P atoms in PS43?

  • Asp3
  • Bsp2
  • Csp
  • Dsp3d
  • Esp3d2

What is the hybridization of the Cl atom in ClO3?

  • Asp
  • Bsp3d
  • Csp2
  • Dsp3d2
  • Esp3

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