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The Covalent Bond and Why Atoms Bond

Why do atoms bond? · What type of elements combine to form covalent bonds?

List of elements that you can use

Boron Carbon Nitrogen Oxygen Fluorine Neon

Hydrogen Silicon Phosphorous Sulfur Chlorine Argon

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Using only two elements at a time, one non-metal and another non-metal from the list above, create stable covalent bonds between the different elements. Multiple dot structures of an element may be used, but you can only use two elements at a time. Fill in the data chart as instructed.

Unit 5: Compounds

The Covalent Bond

 

Intro: Use your notes to answer the following questions ·         Why do atoms bond?   ·         What type of elements combine to form covalent bonds?

List of elements that you can use

Boron              Carbon            Nitrogen                      Oxygen           Fluorine           Neon

Hydrogen        Silicon             Phosphorous               Sulfur              Chlorine           Argon

 

Using only two elements at a time, one non-metal and another non-metal from the list above, create stable covalent bonds between the different elements.  Multiple dot structures of an element may be used, but you can only use two elements at a time.  Fill in the data chart as instructed.

Dot Drawing	Non-metal Element and number used	Non-metal Element and number used	Chemical Formula

 

Dot Drawing	Non-metal Element and number used	Non-metal Element and number used	Chemical Formula
Make diatomic
Make diatomic

Follow up Questions:

1. Describe how a covalent bond forms, be sure to use the following words in your description:   non-metal, valence electrons, sharing, octet rule, 8 valence electrons,

 

 

 

 

1. Give one similarity and 2 differences between an ionic bond and the covalent bond.
   1. One similarity:

 

1. 1. Two differences:

 

1. List the 7 diatomic molecules (this will need to be memorized)

 

 

 

1. Give the three exceptions for the octet rule and how many valence electrons makes them stable.

 

 

 

1. Explain why hydrogen and helium are stable with fewer than 8 valence electrons.

 

 

 

1. Describe the different levels of a covalent bond:

Polar Covalent:

 

Non-polar Covalent:

 

Ionic:

 

1. In the picture (a) to the side which element will have a stronger pull on the shared electrons?

 

 

 

 

 

 

 

1. Using an electronegativity periodic table determine the level of bond for each of the compounds.

Compound        Subtraction of electroneg       Difference       Bond Level

1. 1. NS₂

 

1. 1. F₂

 

1. 1. BCl₃

 

1. 1. N₂O₂

 

1. 1. CH₄

 

1. 1. SBr₂