What type of bond is it
In what kind of bond does the atom have to transfer its electron to the other?
Ionic bond
what is a covalent bond?
when two atoms share a pair of electrons, always between non-metals
what element is Be?
Beryllium
what are the subatomic particles in atoms
neutron, protons and electrons
what is the charge of electrons?
negative 1-
why does magnesium oxide have a higher melting point than sodium chloride even though they are both ionic compounds?
because its ions have higher charges and stronger electrostatic attractions
give three examples of giant covalent structures
diamond, graphite and silicon dioxide
three examples of giant ionic structures
sodium chloride, magnesium oxide, caesium chloride
what element is At
Astatine
what are neutrons and protons called together
nucleons