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[Free Download] Lewis Structure Practice Worksheet #9 - Science Education and Tutorials

Molecules are drawn with their dot electron representation. It is easily distinguished with bond, lone and iconic pairs. Lewis structure worksheets or Lewis structure practice worksheet are useful to the student to practice themself.

## Lewis structure worksheet 1

Write the Lewis structure of the following molecules (click the link for molecular geometry).

## Explanation and Answers: Worksheet 1 (lewis structure worksheet 1 answer key)

### (a) Lewis structure drawing method for SF4 (Sulfur tetrafluoride)

1. First put 6 electron dots around central sulfur atom
2. Then put seven electron dots to all fluorine atoms
3. One lone pair of electron on sulfur atom

### (b) Lewis structure drawing method for H2O (water)

1. First put 6 electron dots around central oxygen atom
2. Then put one electron dot to all hydrogen atoms
3. Two lone pair of electrons on oxygen atom

### (c) Lewis structure drawing method for CH2Cl2 (Methyl dichloride)

1. First put 4 electron dots around central carbon atom
2. Then put one electron dot to all hydrogen atoms
3. Then put seven electron dots on all chlorine atoms
4. No lone pair of electrons on carbon atom

### (d) Lewis structure drawing method for NH3 (Ammonia)

1. First put 5 electron dots around central nitrogen atom
2. Then put one electron dot to all hydrogen atoms
3. One lone pair of electron on nitrogen atom

### (e) Lewis structure drawing method for XeF4 (Xenon tetrafluoride)

1. First put 8 electron dots around central xenon atom
2. Then put seven electron dots to all fluorine atoms
3. Two lone pair of electrons on xenon atom

### (f) Lewis structure drawing method for BF3 (Boron trifluoride)

1. First put 3 electron dots around central boron atom
2. Then put seven electron dots to all fluorine atoms
3. No lone pair of electrons on Boron atom

## lewis structure practice worksheet 2

Write the Lewis structure of the following molecules (click the link for molecular geometry).

### (a) Lewis structure drawing method for NH4+ (Ammonium ion)

1. First put 5 electron dots around central nitogen atom
2. Then put one electron dots to all hydrogen atoms
3. No lone pair of electron on nitrogen atom (one positive charge)

### (b) Lewis structure drawing method for CHCl3 (Trichloro methane)

1. First put 4 electron dots around central carbon atom
2. Then put one electron dot to all hydrogen atoms
3. Then put seven electron dots on all chlorine atoms
4. No lone pair of electron on carbon atom

### (c) Lewis structure drawing method for BrF3 (Trifluoro bromine)

1. First put seven electron dots around central bromine atom
2. Then put seven electron dots on all fluorine atoms
3. Two lone pair of electrons on bromine atom

### (d) Lewis structure drawing method for BrF5 (Pentafluoro bromine)

1. First put seven electron dots around central bromine atom
2. Then put seven electron dots on all fluorine atoms
3. One lone pair of electron on bromine atom

### (e) Lewis structure drawing method for SO3 (Sulfur trioxide)

1. First put six electron dots around central sulfur atom
2. Then put six electron dots on all oxygen atoms
3. No lone pair of electrons on sulfur atom

### (f) Lewis structure drawing method for SCl2 (Sulfur dichloride)

1. First put six electron dots around central sulfur atom
2. Then put seven electron dots on all chlorine atoms
3. Two lone pair of electrons on sulfur atom

## Lewis dot structure worksheet 3

Write the Lewis structure of the following molecules (click the link for molecular geometry).

## Explanation and Answers: Worksheet 3 (worksheet electron dot diagrams and lewis structures answers)

### (a) Lewis structure drawing method for PCl3 (Phosphorus trichloride)

1. First put 5 electron dots around central phosphorus atom
2. Then put seven electron dots to all chlorine atoms
3. One lone pair of electron on Phosphorus atom

### (b) Lewis structure drawing method for H2S (Hydrogen disulfide)

1. First put six electron dots around central sulfur atom
2. Then put one electron dot to all hydrogen atoms
3. Two lone pair of electron on sulfur atom

### (c) Lewis structure drawing method for NO2+ (Nitronium ion)

1. First put 5 electron dots around central nitrogen atom
2. Then put six electron dots to all oxygen atoms
3. No lone pair of electron on nitrogen atom (positive charge)

### (d) Lewis structure drawing method for HBr (Hydrogen bromide)

1. First put seven electron dots around bromine atom
2. Then put one electron dot to hydrogen atom
3. Three lone pair of electrons on bromine atom

### (e) Lewis structure drawing method for CS2 (Carbon disulfide)

1. First put 4 electron dots around central carbon atom
2. Then put six electron dots to all sulfur atoms
3. No lone pair of electron on carbon atom

### (f) Lewis structure drawing method for CH3F (Monofluoro methane)

1. First put 4 electron dots around central carbon atom
2. Then put seven electron dots to fluorine atom
3. No lone pair of electron on carbon atom

## Lewis dot structure worksheet 4

Write the Lewis structure of the following molecules (click the link for molecular geometry).

## Explanation and Answers: Worksheet 3 (worksheet electron dot diagrams and lewis structures answers)

### (a) Lewis structure drawing method for SO2 (Sulfur dioxide)

1. First put 6 electron dots around central sulfur atom
2. Then put six electron dots to all oxygen atoms
3. One lone pair of electron on sulfur atom

### (b) Lewis structure drawing method for HCl (Hydrogen chloride)

1. First put seven electron dots around chlorine atom
2. Then put one electron dot to hydrogen atom
3. Three lone pair of electron on chlorine atom

### (c) Lewis structure drawing method for HF (Hydrogen fluoride)

1. First put seven electron dots around fluorine atom
2. Then put one electron dot to hydrogen atom
3. Three lone pair of electron on fluorine atom

### (d) Lewis structure drawing method for HI (Hydrogen iodide)

1. First put seven electron dots around iodine atom
2. Then put one electron dot to hydrogen atom
3. Three lone pair of electron on iodine atom

### (e) Lewis structure drawing method for CO2 (Carbon dioxide)

1. First put four electron dots around carbon atom
2. Then put six electron dots to oxygen atom
3. No lone pair of electron on carbon atom