4a. share, covalent bonds, molecular, less than 1.7
4b. 1) cations and "sea of free flowing valence electron" (that came from the metal atom releases its valence to form its cation form)
1. Metal, cation (positively charged ions)
2. Molecule
3. After bonding, all elements need 8 valence electrons (e- around them except H (2e-), Be (4e-), B (6e-) and all element with 3rd energy level or higher can exceed 8.
4a. share, covalent bonds, molecular, less than 1.7
4b. 1) cations and "sea of free flowing valence electron" (that came from the metal atom releases its valence to form its cation form)
5. ions
6. MC - both ratio of atoms and actual number of each atom
IC - ratio of ions