· Chemistry – Molecules – Bonds – Covalent
- Covalent bond is formed when
two electron clouds of two atoms overlap which creates structure we call
- What happens is that
actually both electrons now happily travel around both atoms.
- We say that atoms share an
- For example two hydrogen
atoms can create H2 molecule.
- Electron of each hydrogen
atom is attracted to proton of the other hydrogen atom.
electron wants to get as close as possilbe to the proton of the other atom
draging it's own proton behind.
- On the other hand two
protons repulse each other.
that each proton acts as if it is draging it's one electron away from the
proton of the other atom.
- At some distance between
protons, force with which electrons are draging their protons toward eachother
the force with which protons repulse each other whixh results in a stable
- Symbol for such structure
contains single line connecting two hydrogen atom, where this line represent
between two hydrogen atoms.
- Following symbol represents hydrogen
cyanide molecule, in which carbon atom (C) chares three pairs of electrons with
atom (N) and one pair of electrons with hydrogen atom (H).