How many covalent bonds will the atoms of hydrogen oxygen carbon and nitrogen form?

Carbon forms 4 bonds, nitrogen forms 3, oxygen forms two and hydrogen forms one.

O=2 H=1 N=3 C=4

Nitrogen has 5 valence electrons in its outer shell, but wants to complete its outer shell so it has 8 electrons to become a noble gas (Group 18; see periodic table). Therefore, 3 hydrogen atoms form...

Four hydrogen atoms bond to carbon to form methane, and thus methane has the formula CH4.

2 covalent bonds. The oxygen atom needs to gain two valence electrons, so it shares with two other atoms to reach this.