Covalent Bonds

Covalent Bonds

Covalent Bond

formed between nonmetals

Covalent Bond

electronegativity attraction forces being stronger than the repulsion forces

Covalent Bond

Low melting point

do not conduct electricity

primarily gases

Covalent bond

atoms with high kinetic energy react with other atoms to become more stable

Covalent Bond

bond energy is the amount of energy to break a chemical bond

Covalent Bond

Electron Dot or Lewis Dot

signifies the bonding pair of electrons

covalent bond

polar- unequal sharing of electrons

creates dipoles

Covalent bond

non polar is equal sharing of electrons

Covalent Bond

Electron Dot or Lewis Dot

signifies the bonding pair of electrons

Polyatomic ions

a bonded set of 2 or more atoms that function as a single unit

Covalent Bonds

Resonance/hybrid Structures

are electron dot structures that have multiple correct lewis dot arrangements

Octet Exceptions

Free Radicals have odd number of electrons

Octet exceptions

electron deficient the central atom does not have a filled valence shell

Octet Exceptions

hypervalency atoms can have more than 8 electrons

Multiple Choice

What type of bond is shown in this image?

• Ionic
• Polar Covalent
• Nonpolar Covalent
• Van der Waals Force

Multiple Choice

What two types of atoms make a covalent bond?

• 2 Nonmetals
• 1 Nonmetal and 1 Metal
• 2 Metals
• 2 Noble Gases

Multiple Choice

How do covalent bonds form?

• Donating & receiving valence e- between atoms.
• Opposite slight charges attract each other between compounds.
• Scientists are still not sure how they form.
• Sharing valence e- between atoms.

Multiple Choice

Compared to ionic compounds, molecular compounds generally have...

• stronger chemical bonds
• poor conductivity
• a high melting point
• lower densities

Multiple Choice

Partial charges like the ones shown here are called:

• dipoles
• deltas
• ions
• magnetic poles

Multiple Choice

In this Lewis structure, the symbol above F means...

• electrons are being transferred to Fluorine
• electrons are less attracted to F than H
• electrons are more attracted to F than H
• Fluorine has formed a cation

Multiple Choice

Electronegativity is a measurement of the ability of a nucleus to...

• attract bonding electrons
• attract other nuclei
• attract elenece in the non-valence energy levels

Multiple Choice

Covalent bonds are between...

• Metal and Non-metal
• Non-metal and Non-metal
• Metal and Metal

Multiple Choice

Valence electrons are found

• in the innermost energy level of an atom

• in the middle energy levels of an atom

• in the outermost energy levels of an atom

Multiple Choice

In an electron dot diagram, two pairs of shared electrons represents a ...

• single bond
• double bond
• triple bond
• quadruple bond