Isotopes, Atomic Numbers, and Mass Numbers. Atomic number (Z) = number of protons in the nucleus. Mass number (A) = total number of nucleons in the nucleus (i.e., protons and neutrons). By convention, for element X, we write Z A X. Isotopes have the same Z but different A.
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and 16O 2.6560 x 10-23 g.
Σ (isotope mass)( relative abundance)
Silver consists of two isotopes 107Ag and 109Ag. Its average atomic mass is 107.87. Calculate the percentage of each isotope in naturally occurring silver. (Assume that the masses are 107.00 and 109.00 respectively.)
I don’t feel well because I “ate” something “ic”ky!
For example carbonate (CO32-) makes carbonic acid
Carbon: Graphite, Diamond, “Bucky Balls”
Oxygen: Oxygen gas, Ozone
Tin: White (metallic tin), Gray Tin
mono, di, tri, tetra, penta, hexa, hepta, octa, nona, deca.