Electronegativity and Lewis Dot Review

Electronegativity is a measurement of the ability of a nucleus to:

• attract bonding electrons

• attract other nuclei

• attract electrons in the non-valence energy levels

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The most electronegative atom in the periodic table is:

• Fluorine
• Helium
• Neon
• Francium

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In this Lewis structure, the symbol above F means...

• electrons are being transferred to Fluorine
• electrons are less attracted to F than H
• electrons are more attracted to F than H
• Fluorine has formed a cation

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The electronegativity difference in the bonds of CH₄ is:

• 0.4

• 5.9

• -0.4

• 1.7

A covalent bond usually forms between:

• a metal and a nonmetal

• either metals or nonmetals

• two metals

• two nonmetals

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A diatomic molecule like O2 is always_______ because electrons are shared ________.

• nonpolar; equally

• polar; equally

• nonpolar; unequally

• nonpolar; unequally

How many valence electrons in this structure?

• 6
• 5
• 4
• 7

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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 increasing order:
F, N, B

• B < N < F
• B < F < N
• N < F < B
• F < N < B

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