Oxidation Numbers in OF2

Oxidation Numbers in OF2

Assessment

Interactive Video

Chemistry

9th - 10th Grade

Hard

Created by

Liam Anderson

FREE Resource

The video tutorial explains how to determine the oxidation numbers of elements in the compound oxygen difluoride (OF2). It highlights the unique case where oxygen has a positive oxidation number due to fluorine's higher electronegativity. The tutorial demonstrates an algebraic approach to calculate these numbers, confirming that in OF2, fluorine has an oxidation number of -1, and oxygen has +2. The video concludes with a summary of these findings.

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8 questions

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1.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What is the total sum of oxidation numbers in a neutral molecule like OF2?

It is always negative.

It is always positive.

It is zero.

It depends on the elements present.

2.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

In most compounds, what is the typical oxidation number of oxygen?

-1

+2

-2

+1

3.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Why does fluorine have a -1 oxidation number in OF2?

Because it is less electronegative than oxygen.

Because it shares electrons equally with oxygen.

Because it is more electronegative than oxygen.

Because it forms a positive ion.

4.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What is the role of electronegativity in determining oxidation numbers in OF2?

It has no role.

It makes oxygen more electronegative.

It makes fluorine more electronegative.

It makes both elements equally electronegative.

5.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

How do you set up the equation to find the oxidation number of oxygen in OF2?

x + 2 = 0

x + (-2) = 0

x - 2 = 0

2x + 1 = 0

6.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What is the oxidation number of oxygen in OF2?

+1

+2

-1

-2

7.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Which method can be used to determine the oxidation number of oxygen in OF2?

Both algebraic method and visual inspection

Only visual inspection

Only algebraic method

Neither method

8.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What is unusual about the oxidation number of oxygen in OF2 compared to its usual state?

It is zero.

It is the same as usual.

It is more positive than usual.

It is more negative than usual.