Write Lewis symbols for the following atoms. (a) Kr; (b) Ge; (c) N; (d) Ga; (e) As; (f) Rb.
Chapter 2 ● Atoms First ○ Atom smallest quantity of matter that retains its properties ○ Element a substance that can't be broken down any further. ● Subatomic Particles and Atomic Structure ○ Electron negatively charged subatomic particle found outside the nucleus of all atoms ○ Nucleus dense center core within the atom ○ Proton positively charged particles in the nucleus ○ Neutron electrically neutral subatomic particle ● Atomic Number, Mass Number, and Isotopes ○ Elemental identity of an atom can be identified by their atomic number ■ Atomic number number of protons in the nucleus of each atom of an element ○ Mass Number = Total Protons + Total Neutrons ○ To
