atomic orbitals, multiple bonds,
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Questions and Answers

In a methane molecule, what type of bond is formed between the carbon atom and each hydrogen atom?

  • Pi (Ï€) bond
  • Hydrogen bond
  • Sigma (σ) bond (correct)
  • Ionic bond

What is the hybridization state of the carbon atom in ethane, C2H6?

  • sp3 (correct)
  • sp2
  • s
  • sp

What happens to lone pairs of electrons in sp3 hybridized atoms?

  • They occupy specific d orbitals
  • They are shared equally between neighboring atoms
  • They occupy hybrid orbitals (correct)
  • They remain in their original atomic orbitals

What is the reason for the distortion in bond angles in molecules like ammonia and water?

<p>Lone pairs occupying more space than bonding pairs (C)</p> Signup and view all the answers

Which of the following molecules exhibits sp3 hybridization?

<p>$CCl_4$ (D)</p> Signup and view all the answers

How many sigma (σ) bonds are formed when two ethane molecules react to form a dimer?

<p>6 (D)</p> Signup and view all the answers

What atomic orbitals are used for sp3d hybridization?

<p>$s$, $p$, $d$ (D)</p> Signup and view all the answers

What is the geometry around a nitrogen atom in ammonia (NH3)?

<p>$107.3^{\ ext{o}}$ angle (B)</p> Signup and view all the answers

What type of bonds are formed between carbon and hydrogen atoms in ethane?

<p>$\sigma$ bonds (D)</p> Signup and view all the answers

How do the bond angles in water molecules (H2O) differ from ideal tetrahedral angles?

<p>$104.5^{\ ext{o}} (B)</p> Signup and view all the answers

What type of bond is formed between the carbon atoms in ethane, C2H6?

<p>Sigma bond (C)</p> Signup and view all the answers

How many sigma bonds are formed between two ethane molecules when they react to form a dimer?

<p>4 (A)</p> Signup and view all the answers

What is the hybridization state of the nitrogen atom in ammonia (NH3)?

<p>sp3 (C)</p> Signup and view all the answers

Which molecule has bond angles slightly smaller than ideal tetrahedral angles?

<p>H2O (B)</p> Signup and view all the answers

In the structure of methane, CH4, what type of orbitals overlap to form C-H sigma bonds?

<p>sp3 orbitals of carbon and 1s orbitals of hydrogen (B)</p> Signup and view all the answers

Which hybridization state allows an orbital to hold a lone pair of electrons?

<p>sp3 (A)</p> Signup and view all the answers

What is the geometry around the oxygen atom in water (H2O)?

<ul> <li>bent (C)</li> </ul> Signup and view all the answers

In a methane molecule, how many sigma (σ) bonds are formed between the carbon atom and each hydrogen atom?

<p>1 (A)</p> Signup and view all the answers

In ethane (C2H6), how many sigma (σ) bonds are formed between two carbon atoms?

<p>2 (D)</p> Signup and view all the answers

Which molecule has an sp3 hybridized nitrogen atom with one hybrid orbital occupied by a lone pair of electrons?

<p>Ammonia (NH3) (C)</p> Signup and view all the answers

What type of bond is formed between a carbon atom and a hydrogen atom in ethane (C2H6)?

<p>σ bond (D)</p> Signup and view all the answers

What is the ideal bond angle for perfect tetrahedra?

<p>$109.5°$ (C)</p> Signup and view all the answers

Which molecule has an oxygen atom that is sp3 hybridized with two hybrid orbitals occupied by lone pairs and two by bonding pairs?

<p>$\text{H}_2\text{O}$ (D)</p> Signup and view all the answers

What allows structures with lone pairs to have bond angles slightly distorted from the ideal?

<p>$sp^3$ hybridization (C)</p> Signup and view all the answers

How many sigma (σ) bonds are formed when two ethane molecules react to form a dimer?

<p>$4$ (A)</p> Signup and view all the answers

What is the geometry around the nitrogen atom in ammonia (NH3)?

<p>$107.3^\circ$ (C)</p> Signup and view all the answers

Which molecule exhibits sp3 hybridization with one hybrid orbital occupied by a lone pair, similar to ammonia?

<p>$\text{PCl}_3$ (C)</p> Signup and view all the answers

What type of hybridization occurs in the carbon atom of a methane molecule, CH4?

<p>sp3 hybridization (D)</p> Signup and view all the answers

In the ethane molecule, how many σ bonds are formed between two carbon atoms?

<p>Seven σ bonds (D)</p> Signup and view all the answers

What type of bond is formed between an sp3 orbital of one carbon atom and an sp3 orbital of a second carbon atom in ethane?

<p>σ bond (D)</p> Signup and view all the answers

Which molecule has its nitrogen atom surrounded by three bonding pairs and a lone pair of electrons in a tetrahedral arrangement?

<p>NH3 (B)</p> Signup and view all the answers

What is the shape of the molecular structure of water, H2O?

<p>Bent (C)</p> Signup and view all the answers

Which molecule shows bond angles slightly smaller than the ideal tetrahedral angles in its structure?

<p>NH3 (B)</p> Signup and view all the answers

What type of hybridization is observed in molecules like CCl4, PCl3, and NCl3?

<p>sp3 hybridization (B)</p> Signup and view all the answers

How many σ bonds are formed between a carbon atom and each hydrogen atom in a methane molecule?

<p>One σ bond (D)</p> Signup and view all the answers

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