Electronegativity and Bond Polarity

What is electronegativity and how does it influence bonding between elements?

• Electronegativity is the measure of an atom's size and has no influence on bonding

• Electronegativity is the measure of an atom's ability to attract and hold electrons. It determines whether the bond will be ionic, polar covalent, or nonpolar covalent.

• Electronegativity is the measure of an atom's color and affects the strength of covalent bonds

• Electronegativity is the measure of an atom's mass and determines metallic bonding

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NGSS.HS-PS1-1

How does electronegativity predict the type of bonding between elements?

• Similar electronegativities form ionic bonds

• Electronegativity doesn't affect bonding type

• Similar electronegativities form covalent bonds, large differences form ionic bonds.

• Large differences in electronegativity form covalent bonds

An ionic bond occurs because a nonmetal with a very ​ (a)   electronegativity can steal valence electrons from a metal with a ​ low electronegativity. This causes the metal to form a ​ (b)   charge and the nonmetal to form a ​ (c)   charge. These opposite charges will allow the charged metal and nonmetal atoms to ​ (d)   .

• high
• positive
• negative
• attract

Tags

NGSS.HS-PS1-1

NGSS.HS-PS1-2

In an ionic bond, electrons are ​ (a)   from the ​ (b)   to the ​ (c)   . ​

• transferred
• metal
• nonmetal
• weak
• semimetal
• shared

Tags

NGSS.HS-PS1-1

The electrons in a polar covalent molecule are shared...

• Evenly

• Unevenly

• Electrons are not shared

• None of the Above

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NGSS.HS-PS1-1

The electrons in a nonpolar covalent molecule are shared...

• Evenly

• Unevenly

• Electrons are not shared

• None of the Above

The electrons in an ionic molecule are shared...

• Evenly

• Unevenly

• Electrons are not shared

• None of the Above

In a polar covalent bond, the electrons gather around...

• The atom with the Greatest Electronegativity

• The atom with the Lowest Electronegativity

• Each atom Equally

• None of the Above

Which element has the highest electronegativity value?

• Hydrogen

• Oxygen

• Fluorine

• Nitrogen

Tags

DOK Level 1: Recall

What type of bond forms between two atoms if the difference between their electronegativities is equal to 3.00?

• nonpolar

• somewhat polar

• very polar

• ionic

Tags

NGSS.HS-PS2-4