Search Header Logo
Phosphorus Fluoride Molecular Geometry

Phosphorus Fluoride Molecular Geometry

Assessment

Interactive Video

Chemistry

9th - 10th Grade

Practice Problem

Hard

Created by

Ethan Morris

FREE Resource

The video tutorial explains how to draw the Lewis structure for phosphorus trifluoride (PF3). It begins by counting the total number of valence electrons using the periodic table, identifying phosphorus and fluorine's valence electrons. The tutorial then guides viewers through placing the least electronegative atom, phosphorus, in the center and arranging fluorine atoms around it. It explains forming chemical bonds by placing electron pairs between atoms and completing the octets for each atom. Finally, the video discusses the molecular geometry of PF3, highlighting its trigonal pyramidal shape due to the lone pair of electrons on phosphorus.

Read more

7 questions

Show all answers

1.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

How many valence electrons does phosphorus have in the PF3 molecule?

3

9

5

7

2.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What is the total number of valence electrons in PF3?

18

26

28

24

3.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Which atom is placed at the center of the PF3 Lewis structure?

Nitrogen

Phosphorus

Oxygen

Fluorine

4.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

How many pairs of electrons are used to form bonds between phosphorus and fluorine in PF3?

3

4

2

1

5.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

After completing the octets for fluorine atoms, how many valence electrons are left for phosphorus?

6

4

2

0

6.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What is the molecular geometry of PF3?

Tetrahedral

Trigonal Pyramidal

Trigonal Planar

Linear

7.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What effect does the lone pair on phosphorus have on the molecular shape of PF3?

It pushes the fluorine atoms down.

It makes the molecule linear.

It has no effect on the shape.

It makes the molecule planar.

Access all questions and much more by creating a free account

Create resources

Host any resource

Get auto-graded reports

Google

Continue with Google

Email

Continue with Email

Classlink

Continue with Classlink

Clever

Continue with Clever

or continue with

Microsoft

Microsoft

Apple

Apple

Others

Others

Already have an account?