The Student Room Group

What affects the covalent bonds?

Hi,

I was just wondering, what would affect the actual strength of a single covalent bond between two atoms? Why do we get different values for different single bonds? What properties of the bonding atoms cause the difference?

Many thanks in advance.
Original post by Bigbosshead
Hi,

I was just wondering, what would affect the actual strength of a single covalent bond between two atoms? Why do we get different values for different single bonds? What properties of the bonding atoms cause the difference?

Many thanks in advance.


heat can affect the covalent bonds, as it can break them. Not sure of anything else i dont do chemistry for a-level ;D
Reply 2
the length of the bond affects the strength of the bond, the bigger the atoms, the bigger the bond, hence the weaker the bond.
The smaller the atoms the smaller the bond the stronger the bond.
Reply 3
atomic radii - if the atom is bigger, that means the distance between bonds are longer so the bond is weaker
atomic charge - the higher the charge, the greater the bond strength because theres higher charge denisty. e.g. anything with +2 charge has a stronger covalent bond than one with a +1 charge

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