Electronegativity and Polarity Quiz
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Questions and Answers

Is SF6 an ionic, polar, or nonpolar compound?

  • Ionic
  • Nonpolar (correct)
  • Polar

Using the electronegativity values, the B-H bonds in BH3 are __________.

Nonpolar covalent

Is NH3 an ionic, polar, or nonpolar compound?

  • Ionic
  • Polar (correct)
  • Nonpolar

The bonding predicted by electronegativities in CsBr is __________.

<p>Ionic</p> Signup and view all the answers

Identify the pair that lists the element with the higher electronegativity value written first.

<p>C, Si</p> Signup and view all the answers

Which element has the smallest electronegativity?

<p>Gallium</p> Signup and view all the answers

Using the electronegativity values, the Li-N bonds in Li3N are __________.

<p>Ionic</p> Signup and view all the answers

Identify the pair that lists the element with the lower electronegativity value written first.

<p>P, S</p> Signup and view all the answers

The polar molecule among the following is __________.

<p>N-C-CH3</p> Signup and view all the answers

The polar molecule among the following is __________.

<p>PCl3</p> Signup and view all the answers

Which element has the greatest electronegativity?

<p>Oxygen</p> Signup and view all the answers

Which bond is the most polar?

<p>B-Cl</p> Signup and view all the answers

Which combination of elements will be most likely to form an ionic compound?

<p>Metal and nonmetal</p> Signup and view all the answers

The bonding predicted by electronegativities in HCl is __________.

<p>Polar Covalent</p> Signup and view all the answers

Which element will form the most polar bond with fluorine?

<p>Boron</p> Signup and view all the answers

The nonpolar molecule among the following is __________.

<p>C2H4</p> Signup and view all the answers

Using electronegativity values, the C-Cl bonds in CCl4 are __________.

<p>Polar Covalent</p> Signup and view all the answers

Is PF5 an ionic, polar, or nonpolar compound?

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

The bonding predicted by electronegativities in Cl2 is __________.

<p>Nonpolar covalent</p> Signup and view all the answers

Is ClF3 an ionic, polar, or nonpolar compound?

<p>Polar</p> Signup and view all the answers

Is XeF4 an ionic, polar, or nonpolar compound?

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

The polar molecule among the following is __________.

<p>H2O</p> Signup and view all the answers

The nonpolar molecule among the following is __________.

<p>CCl4</p> Signup and view all the answers

The bonding predicted by electronegativities in HCl is __________.

<p>Polar covalent</p> Signup and view all the answers

The nonpolar molecule among the following is __________.

<p>N2</p> Signup and view all the answers

The bonding predicted by electronegativities in HBr is __________.

<p>Polar covalent</p> Signup and view all the answers

What are the general trends in electronegativity values?

<p>Increase from left to right, decrease from top to bottom</p> Signup and view all the answers

The bonding predicted by electronegativities in MgO is __________.

<p>Ionic</p> Signup and view all the answers

The nonpolar molecule among the following is __________.

<p>CO2</p> Signup and view all the answers

Flashcards

SF6

A nonpolar compound due to its symmetrical structure.

BH3 bonds

Considered nonpolar covalent, indicating equal sharing of electrons.

NH3

Identified as a polar compound because of its bent shape and electronegativity difference.

CsBr bonding

Exhibits ionic bonding due to large electronegativity difference between cesium and bromine.

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Electronegativity of C and Si

Carbon has higher electronegativity than silicon, affecting bond characteristics.

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Gallium electronegativity

Gallium has the smallest electronegativity among its group, influencing reactivity.

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Li-N bonds in Li3N

Classified as ionic because of strong electronegativity difference between lithium and nitrogen.

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Electronegativity of P and S

Phosphorus has lower electronegativity than sulfur.

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Polar C-N bond

Found in the molecule N-C-CH3 (an amine), identified as polar.

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PCl3 polarity

Polar molecule due to trigonal pyramidal geometry and electronegativity differences.

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Greatest electronegativity

Oxygen holds the title for the highest electronegativity, increasing reactivity.

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Most polar bond

The B-Cl bond is the most polar due to significant electronegativity difference.

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Ionic compound formation

Typically involves a metal and a nonmetal, exhibiting strong electronegativity differences.

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HCl bonding

Characterized as polar covalent with partial charges.

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Most polar bond - Boron & Fluorine

Boron forms the most polar bond with fluorine due to fluorine’s high electronegativity.

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C2H4 polarity

A nonpolar molecule due to its symmetrical distribution of charge.

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CCl4 molecule

Has polar C-Cl bonds, but is nonpolar overall due to symmetrical shape.

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PF5 classification

Classified as nonpolar despite having polar bonds because geometry cancels dipoles.

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Water (H2O) polarity

Known as a polar molecule, crucial for its solvent properties.

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CO2 polarity

Another nonpolar molecule, as its linear structure balances out dipoles.

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N2 polarity

It is a nonpolar molecule due to equal sharing of electrons between identical nitrogen atoms.

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HBr bonding

Exhibits polar covalent bonding due to differing electronegativities of H and Br.

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Electronegativity trend

Increases from left to right and decreases from top to bottom in the periodic table.

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MgO bonding

Known for ionic bonding due to large electronegativity difference between magnesium and oxygen.

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O-H bonds in water

Classified as polar covalent, essential for water's properties.

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P-Cl bonds in PCl3

Identified as polar covalent, contributing to the overall molecule’s polarity.

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Study Notes

Electronegativity and Polarity

  • SF6 is classified as a nonpolar compound due to its symmetric structure that balances dipoles.
  • In BH3, the B-H bonds are considered nonpolar covalent, indicating equal sharing of electrons.
  • NH3 (ammonia) is identified as a polar compound owing to its bent shape and electronegativity difference between N and H.
  • CsBr exhibits ionic bonding, stemming from the significant electronegativity difference between cesium and bromine.
  • The pair C and Si demonstrates higher electronegativity for carbon, which is critical for predicting bond characteristics.
  • Gallium has the smallest electronegativity, impacting its reactivity and bonding behavior.
  • The Li-N bonds in Li3N are classified as ionic, driven by the strong electronegativity difference between lithium and nitrogen.
  • The pair P and S lists phosphorus first, indicating it has the lower electronegativity value relative to sulfur.
  • The molecule N-C-CH3 (an amine) is identified as polar due to the presence of a polar C-N bond.
  • PCl3 is also a polar molecule, attributed to its trigonal pyramidal geometry and electronegativity differences.
  • Oxygen holds the title for the greatest electronegativity, making it highly reactive.
  • The bond that is most polar is B-Cl, due to the significant electronegativity difference.
  • Ionic compounds are typically formed between a metal and a nonmetal, reflecting strong differences in electronegativity.
  • In HCl, the bonding is characterized as polar covalent, highlighting partial charges across the molecule.
  • Boron will form the most polar bond with fluorine, given fluorine's high electronegativity.
  • C2H4 (ethylene) stands out as a nonpolar molecule due to its symmetrical distribution of charge.
  • In CCl4, the C-Cl bonds create a polar covalent environment but the overall molecule remains nonpolar due to symmetry.
  • PF5 is classified as nonpolar, despite having polar bonds, the geometry cancels the dipoles.
  • Water (H2O) is a famous polar molecule, crucial for its solvent properties.
  • CO2 is another example of a nonpolar molecule, as the linear structure balances out dipoles.
  • N2 is a nonpolar molecule because of equal sharing of electrons between the identical nitrogen atoms.
  • In contrast, HBr exhibits polar covalent bonding, due to differing electronegativities of H and Br.
  • Electronegativity generally increases from left to right across the periodic table and decreases from top to bottom, influencing chemical behavior.
  • MgO is known for its ionic bonding due to the large electronegativity difference between magnesium and oxygen.
  • O-H bonds in water (H2O) are classified as polar covalent, which is vital for water's unique properties.
  • The P-Cl bonds in PCl3 are identified as polar covalent, resulting in a polar overall molecule.

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Description

Test your knowledge on electronegativity and polarity by exploring various compounds such as SF6, BH3, and NH3. Understand the significance of molecular structure and electronegativity differences in determining bond types and characteristics. This quiz will reinforce your understanding of these fundamental chemistry concepts.

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