The head of a pin is 1.5 x 103 m in diameter. If 1.136 x 107 atoms of oxygen can fit across the head of a pin, what is the atomic radius of oxygen? O A 7.57 x 10-10 m
O
B. 1.32 x 10-10 m
O
c. 1.70 x 10-4 m
D. 6.6 x 10-11 m

Which of the following elements would you expect to have the lowest ionization energy value? fluorine, lithium, neon, nitrogen

Achemist wants to extract copper metal from copper chloride solution. the chemist places 0.50 grams of aluminum foil in a solution containing 0.75 grams of copper (ii) chloride. a single replacement reaction takes place. (ii) chloride. a single replacement reaction takes place. which statement explains the maximum amount of copper that the chemist can extract using this reaction? a) approximately 0.36 grams, because copper (ii) chloride acts as a limiting reactant b) approximately 1.8 grams, because copper (ii) chloride acts as a limiting reactant c) approximately 0.36 grams, because aluminum acts as a limiting reactant d) approximately 1.8 grams, because aluminum acts as a limiting reactant

The number to the right of an element's symbol (ex. c-12) identifies the of an isotope.