Bond Length And Bond Energy Flashcards

1
Q

Bond length

A

Is the average distance between the two nuclei of two atoms in a molecule

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2
Q

3 factors that influence bond length

A
  1. Size of the atom: bond length increases as size increases
  2. Difference in electronegativity: a greater difference leads to a greater bond and thus a shorter bond length
  3. Bond order: The higher the number of bonds the smaller the bond length
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3
Q

Bond energy

A

Is the amount of energy necessary to break on mol of a specific covalent bond in the gaseous state

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4
Q

Relation between bond length and bond energy

A

There is an inverse relation between bond length and bond energy:

  • the stronger the bond, the shorter the bond length and the higher the bond energy OR
  • the weaker the bond, the longer the bond length and the lower bond energy
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5
Q

Factors the influence bond strength

A
  1. Bond energy: the greater the bond energy, the greater the bond strength
  2. Bond length: shorter bonds are stronger than longer bonds
  3. Size of the atoms: bonds between smaller atoms are shorter and therefore stronger
  4. Bond energy: double bonds and triple bonds are stronger than single bonds. The higher the bond order, the stronger the bond
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