Use the periodic table to find the atomic number number of
Use the periodic table to find the atomic number, number of protons, number of electrons, and number of valence electrons for each of the following elements.
a. barium
b. tin
c. phosphorus
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calculate the concentration in molesm3 of oxygen in air 21oxygen assuming it acts as an ideal gas at 21oc oxygen
use the periodic table to find the atomic number number of protons number of electrons and number of valence electrons
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