Question 1

Which of the following elements has the highest electronegativity?

Accepted Answer

F

Question 2

What is the difference in electronegativity ($$\Delta EN) $$between carbon and fluorine? Use the values: $$EN_{C} = 2.5$$, $$EN_{F} = 4.0.$$

Accepted Answer

$$1.5$$

Question 3

Which of the following bonds is classified as ionic?

Accepted Answer

Na-F

Question 4

Arrange the following elements in order of decreasing electronegativity: P, Na, N, Al.

Accepted Answer

N \u003e P \u003e Na \u003e Al

Question 5

Which of the following pairs of elements will form the most polar bond?

Accepted Answer

C-F

Question 6

A bond between two identical atoms, such as Br-Br, is best described as:

Accepted Answer

Nonpolar Covalent

Question 7

Which of the following statements about dipole moment is correct?

Accepted Answer

Dipole moment is illustrated by an arrow pointing toward the more electronegative element.

Question 8

If the difference in electronegativity between two atoms is $$0.8$$, what type of bond is most likely formed?

Accepted Answer

Polar Covalent

Question 9

Which of the following correctly identifies the chemical bond between a carbon and oxygen atom?

Accepted Answer

Polar Covalent

Question 10

Which of the following is a significant difference in electronegativity, likely resulting in a polar covalent bond?

Accepted Answer

$$\Delta EN = 1.0$$

Question 11

Which element is the most electronegative among the following?

Accepted Answer

Be

Question 12

Which of the following pairs has the greatest difference in electronegativity?

Accepted Answer

K and F

Question 13

A bond between Na and Cl is best classified as:

Accepted Answer

Ionic

Question 14

Which of the following molecules has the largest dipole moment?

Accepted Answer

H$$_2O$$

Question 15

Which of the following statements about electronegativity trends is correct?

Accepted Answer

Electronegativity increases from left to right across a period and up a group.

Electronegativity, Polarity, and Chemical Bond Classification

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