Electronegativity/Molecule Models

A polar bond is one that

• Has an electronegativity difference greater than 0.7
• Has an electronegativity difference greater than 0.5
• Has an electronegativity difference less that 0.5
• Has an electronegativity difference less than 0.7

What two types of atoms make a covalent bond?

• 2 Nonmetals
• 1 Nonmetal and 1 Metal
• 2 Metals
• 2 Noble Gases

Which of the following statement is correct?

• Polar covalent bond and non-polar covalent bond involves equal sharing of electrons

• Polar covalent bond and non-polar covalent bond involves unequal sharing of electrons

• Polar covalent bond and non-polar covalent bond involves transferring of electrons

• Polar covalent bond involves unequal sharing of electrons while non-polar covalent bond involves equal sharing of electrons

Which has the greater EN: 
N or C?

• C
• N

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Which has the greater EN: 
H or F?

• H
• F

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Put these in order of increasing electronegativity:

F, N, B

• B < N < F

• B < F < N

• N < F < B

• F < N < B

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Put these in order of increasing electronegativity:

C, H, and O

• H < C < O

• H < O < C

• O < C < H

• C < H < O

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Electronegativity is...

• how good an atom is at attracting electrons
• the ability of an atom to lose electrons
• the energy required to remove an electron from a specific atom
• how easy it is to make friends. 

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Which element has a lower electronegativity value?

• Calcium (Ca)

• Barium (Ba)

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Electronegativity _________ as you go down a group on the periodic table.

• decreases

• increases

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