Chemistry Quiz on Molecular Structure
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Questions and Answers

What is the name of the compound with the formula N2S5?

  • Nitrogen Sulfide
  • Di Nitrogen Penta Sulfide (correct)
  • Sulfur Nitride
  • Nitrogen Pentasulfide

How many valence electrons does silicon (Si) have?

  • 6
  • 5
  • 2
  • 4 (correct)

What is the chemical name of the ion with the formula NO2-1?

  • Nitrate
  • Nitrite (correct)
  • Nitro
  • Dinitrogen Oxide

In the compound H2CO, how many σ bonds are present?

<p>3 (B)</p> Signup and view all the answers

What is the charge of the cation in the compound CrPO4?

<p>+3 (C)</p> Signup and view all the answers

What is the formal charge on Chlorine (Cl) in the provided molecule?

<p>0 (D)</p> Signup and view all the answers

How do you calculate the mass of hexane given its density and volume?

<p>0.3239 (A)</p> Signup and view all the answers

Which of the following represents the correct chemical formula for Calcium hydride?

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

What is the anion and its charge for Tin (IV) Sulfate?

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

Which formula correctly represents dinitrogen decoxide?

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

What is the electron group geometry of XeBr₄?

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

Which molecular geometry describes IF₅?

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

What is the hybridization of the central atom in NOCl?

<p>sp² (B)</p> Signup and view all the answers

Which of the following molecules is nonpolar?

<p>XeBr₄ (A)</p> Signup and view all the answers

What is the polar nature of the molecule IF₅?

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

What characterizes ionic bonds?

<p>Electrons are transferred from metals to nonmetals. (B)</p> Signup and view all the answers

Which factor does NOT influence the polarity of a molecule?

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

Which of the following molecules is classified as nonpolar?

<p>Cl₂ (B)</p> Signup and view all the answers

What type of molecular geometry does the perchlorate anion (ClO₄⁻) exhibit?

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

Which molecule has a bond angle that is likely less than 120°?

<p>SO₂ (C)</p> Signup and view all the answers

What is a characteristic of polar molecules?

<p>They have an unequal distribution of electron density. (A)</p> Signup and view all the answers

What determines whether polar bonds cancel each other out in a molecule?

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

Which molecule is likely to exhibit a bent geometry?

<p>SO₂ (A)</p> Signup and view all the answers

Flashcards

Formula for Di Nitrogen Penta Sulfide

N2S5

Chemical name for CuSO3

Copper (II) Sulfite

Valence electrons in Silicon (Si)

4

Cation and charge for Cr in CrPO4

Cr+3

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Chemical formula for acetate

C2H3O2⁻¹

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Formal Charge of Chlorine

The difference between the number of valence electrons of a neutral chlorine atom and the number of electrons assigned to the chlorine atom in a molecule.

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Calculating Mass from Density and Volume

Mass is equal to density multiplied by volume (m = d * v).

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Chemical Formula Calculation

Determining the chemical formula for a compound given its constituent elements and their charges

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Hexane Mass Calculation

The mass of a substance is equal to the density multiplied by the volume, with mass calculated using given density and volume.

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Tin(IV) Sulfate Chemical Formula

Based on the charges of the ions: Sn+4 SO4-2, the formula would be SnSO4.

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XeBr₄ electron geometry

Octahedral

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XeBr₄ molecular geometry

Square planar

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IF₅ electron geometry

Trigonal bipyramidal

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NOCl molecular geometry

Bent

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NOCl hybridization

sp²

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Ionic Bond

A bond formed by the transfer of electrons between a metal and a nonmetal, resulting in oppositely charged ions that attract each other.

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Covalent Bond

A bond formed by the sharing of electrons between two nonmetals, allowing both atoms to achieve a stable electron configuration.

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Electronegativity Difference

The difference in electronegativity between two atoms in a bond, which affects the polarity of the bond.

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Polar Molecule

A molecule with an uneven distribution of electron density, resulting in a positive and negative pole.

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Nonpolar Molecule

A molecule with an even distribution of electron density, resulting in no distinct poles.

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Molecular Geometry

The three-dimensional arrangement of atoms in a molecule, which influences its polarity.

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SO₂ Structure

Sulfur dioxide (SO₂) has a bent structure with a bond angle less than 120°.

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XeO₄ Structure

Xenon tetroxide (XeO₄) has a tetrahedral structure with a bond angle of approximately 109.5°.

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