1 4,18. 2  Shingles in caused by the same virus that causes chickenpox-varicella-zoster virus. 3  Shingles is a painful infection of the nerve supplying an area of skin and is accompanied by a localised skin rash.
The electrons on the outermost energy level of the atom are called valence electrons. The valence electrons are involved in bonding one atom to another. The attraction of each atomâs nucleus for the valence electrons of the other atom pulls the atoms together.
Valence Electrons Energy Levels in an element. 8.5B I can identify which subatomic particle is responsible for an elementâs identity and the role that valence electrons plays in an elementâs reactivity. 8.5C I can use and interpret the Periodic Table to identify characteristics including valence electrons, energy levels, charges, metals, non-