c. Another major use of bismuth has been as an ingredient in low-melting metal alloys, such as those used in
fire sprinkler systems and in typesetting. The element itself is a brittle white crystalline solid. How do these
characteristics fit with the fact that bismuth is in the same periodic group with such nonmetallic elements as
N & P?
d. $Bi_2O_3$ is a basic oxide. Write a balanced chemical equation for its reaction with dilute nitric acid. If 6.77 g of
$Bi_2O_3$ is dissolved in dilute acidic solution to make 0.500-L solution, what is the molarity of the solution of
$Bi^{3+}$ ion.
e. $^{209}Bi$ is the heaviest stable isotope of any element. How many protons and neutrons are present in this
nucleus?
f. The density of Bi at 25 C is 9.808 g/cm³. How many Bi atoms ae present in a cube of the element that is 5.00
cm on each edge? How many moles of the element are present?