Help with covalent bonds?

Question

how do you find out how many covalent bonds a element will form like nitrogen, hydrogen, oxygen, and carbon?

Answer 1

depends on the no.of valence electrons the atom has. Covalent bonds formed by sharing of electrons. For example: carbon has 4 valence electron and it wanna form CO2 which is a covalent compound, it need to share 2 electron with each oxygen to make up a total of 8 valence electron which is stable. By sharing of 2 electron with each O, it formed 2 covalent bonds.

Answer 2

covalent bond is formed by sharing electons by atoms of diff or the same element to form a molecule.

when each atom contribut 1 electron each it is single bond

when each contribute2 electrons it is double covalent bond

sharing of 3pair of electrons is called as triple covalent bond

h is an example of single bond[covalent]

oxygen is an example of double covalent bond

it config. is 2,6.there are 6 electrons in the valency shell

2 are contributed by both to attain an octed position.

n2 is an example of triple bond

config.2,5

vallency shell needs 3 electrons to attain a octed state.

so both contribut 3 and so it is a triple covalent bond.

carbons has 4 electrons in the valency shell and to attain an octed state both contribute 4 and attain an octed position.

so like these covalent bonds are formed.

Answer 3

You have to look at how far the element is from the stable noble gasses.  For example oxygen is two away from neon and can form 2 covalent bonds.  carbon is 4 away and can form 4 bonds.  That works well for the lower atomic numbers, as for metals, etc. it is a bit more tricky.