Covalent and Metallic Bonding
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what happens if a non metal cant take electrons from another atom to compete its outer shell
it can share electrons with another non metal
are covalent bonds weak or strong
strong
what are covalent bonds held together by
electrostatic forces of attraction between the nuclei and electrons
what happens in a double covalent bond
four electrons are shared, shown by the 2 lines (=)
what are simple molecular substances held together by
weak intermolecular forces
do simple molecular substances have low or high melting and boiling points
low
do simple molecular substances conduct electricity
no, they have no free ions or electrons
whats a metallic bond
an electrostatic attraction between positive metal ions and a sea of delocalised electrons
what is the structure of metals
a giant metallic lattice. reoccurring pattern. atoms loose outer shell electron and release them creating a sea of delocalised electrons . the charge between the positive ions and electrons holds the structure together