A sea of electrons. This is a very good description of the bonding in group 1 group 2 metals. A more advanced view for transition metals calls the sea of electrons an "sp electron gas" alongside covalent bonding involving d electrons. This accounts for the melting point trends in transition metals
electrons are free to move among many atoms
Valence electrons are the electrons involved in chemical reactions.
loss of electrons
The electronegativity is the ability to loss electrons.
energy levels
electrons are free to move among many atoms
electrons are free to move among many atoms
A metallic bond is one where delocalized valence electrons of the metal are attracted to any of the metal cations. The electrons are delocalized meaning they do not stay with any particular nucleus. The bonds are held together by electrostatic interaction between the delocalized electrons and the positive cations.
Valence electrons are the electrons involved in chemical reactions.
flow of electrons
loss of electrons
The flow of electrons
Sharing of electrons. Generally this involves pirs of electrons forming bonds.
energy levels
All electrons within the same energy level have the same energy.
The electronegativity is the ability to loss electrons.
Electrons are transferred from one atom to another.