EXTRA CREDIT FROM REVELL eTEXT:  Each question can be answered separately to earn points. (1) Why is the element mercury added to gold ores in the process of gold mining? (2)  What are the health effects of mercury poisoning? (3)  What problem(s) have caused the use of solar power to be used on the large scale to be such a slow process? (4)  What was the invention that helped solve the problem of storing solar energy? (5)  What element is involved in solar cells that takes advantage of atomic emissions to create an electric current?

EXTRA CREDIT FROM REVELL eTEXT:  Each question can be answered separately to earn points. (1) Why is the element mercury added to gold ores in the process of gold mining? (2)  What are the health effects of mercury poisoning? (3)  What problem(s) have caused the use of solar power to be used on the large scale to be such a slow process? (4)  What was the invention that helped solve the problem of storing solar energy? (5)  What element is involved in solar cells that takes advantage of atomic emissions to create an electric current?

Determine the predicted atomic radius for potassium, K, given the atomic radius of rubidium, Rb, (0.247 nm) and cesium, Cs, (0.265 nm).

Identify the element that corresponds to the electron configuration notation:  [Kr] 5s24d105p2 ?

What is the atomic radius of an atom?

How many energy levels does the element Es (99) have?  

How many energy levels does the element Es (99) have?  

Determine the predicted atomic radius for potassium, K, given the atomic radius of rubidium, Rb, (0.247 nm) and cesium, Cs, (0.265 nm).

Name the element with eight outer electrons and four energy levels.  

Predict the density for calcium metal, Ca, given the density of strontium, Sr, (2.63 g/cm3) and barium, Ba, (3.65 g/cm3).