Module 2 - Polarity of Molecules

Which molecule has a polar covalent bond?

• Which molecule has a polar covalent bond?

• H-F

• K-F

• Na-F

Which of the following molecule contains a nonpolar bonds?

• fluorine gas (F₂)

• hydrogen chloride (HCl)

• nitrogen monoxide (NO)

• potassium Iodide (KI)

Which of the ff. is TRUE about the solubility of nail polish with water?

• water and nail polish are both polar

• water is polar and nail polish is ionic

• water and nail polish are both nonpolar

• water is polar and nail polish is non polar

Which of the following statement best describe a polar bond?

• equal pull between the shared electron(s)

• unequal pull between the shared electron(s)

• equal transfer of electrons resulting in a positive and negative ion

• unequal transfer of electrons resulting a positive and negative ion

Tags

NGSS.HS-PS1-3

Which of the following molecule is nonpolar?

• BeH₂

• H₂Se

• PF₃

• SO₂

Which of the following molecular geometry best describe the shape and polarity of CH₄?

• tetrahedral polar

• tetrahedral nonpolar

• trigonal pyramidal non polar

• trigonal pyramidal polar

Which of the following statement best describe a nonpolar covalent bond?

• two atoms share a pair of electrons with each other

• no electrons are shared between atoms

• 1 atom in a molecule has a partial charge bec. of unequal electron sharing

• one or more elements shared electron

Which of the following periodic trend is CORRECT for electronegativity values?

• increase from left to right across a period

• decrease from left to right across a period

• increases from right to left across a period

• increases from right to left across a period

Tags

NGSS.HS-PS1-1

NGSS.HS-PS1-2

Polarity of a bond between two elements can be best determined by

• number of electrons shared in the bond

• difference in atomic radius between the elements

• difference in electronegativity between the elements

• difference in first ionization energy between the elements

Which of the following H₂ molecule best describe its polarity?

• ionic bond

• covalent bond

• polar covalent bond

• nonpolar covalent bond