Oxygen atoms are close together. The electrons from each atom feel the attraction from the protons in the nucleus of the other atom. This attraction pulls the atoms together and the electrons are ...

Boron, carbon, nitrogen and oxygen: these four elements can form ... This is astonishing because there have long been stable ...

The dot and cross diagram shows that a water molecule is made up of one oxygen atom joined to two hydrogen ... form three covalent bonds, so a triple bond forms between them.

sodium + chlorine → sodium chloride magnesium + oxygen → magnesium oxide calcium + chlorine → calcium chloride lithium + oxygen → lithium oxide In all of these reactions, the metal atoms ...