8.5 Electronegativity and Polarity

Large differences in electronegativity result in __________ bonding between atoms.

• Covalent

• Mettalic

• Ionic

• Hydrogen

Which compound consists of nonpolar molecules?

• H₂S

• PH₃

• AsH₃

• SiH₄

Hydrogen has an electronegativity of 2.20, fluorine an electronegativity of 3.98. What sort of bond do they form?

• mostly ionic

• polar covalent

• mostly covalent

• nonpolar covalent

Which of these molecules is polar?

• a only

• b only

• a and b

• a and c

Which of the following properties does not refer to covalent network solids, like quartz and diamond?

• brittle

• hard

• good conductors of heat

• non-conductors of electricity

Tags

NGSS.HS-PS2-6

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

Tags

NGSS.HS-PS1-1

The molecule shown in the diagram can best be classified as a

• polar covalent molecule
• nonpolar covalent molecule
• ionic compound
• nonpolar ionic compound

Tags

NGSS.HS-PS1-2

NGSS.HS-PS1-1

Which of the molecules contains polar covalent bonds but is NOT itself a polar molecule?

• I
• II
• III
• ¯\_(ツ)_/¯

what causes a partial charge on a molecule with 2 atoms? (dipoles)

• unequal sharing of electrons

• an electronegativity difference between 0.4 and <1.7

• electron spends more time around one of the atoms

• all of the above

Which of the following shapes has unshared pairs of electrons on the central atom? 

• Bipyramidal
• Bent
• Trigonal Planar
• Tetrahedral