Which of the following is a characteristic of nonmetals?
a. non-metals often conduct electricity
b. nonmetals are not ductile
c. nonmetals are often shiny and hard
d. nonmetals are often malleable

Achemist who studies water samples did a demonstration of how to test for lead in water. she added a clear solution of potassium iodide to a clear solution of lead nitrate. then a yellow swirling solid formed in the liquid. what is most likely true about the yellow solid?