Valence electrons in the main group elements are contained in which type(s) of orbitals?

Iron pyrite (fool’s gold) iron(II) sulfide) What is its formula?

Which is the best description of an alpha particle?

The half-life of sodium-24 is 15.0 hours. What percentage of a sample of sodium-24 remains after 75.0 hours?

Which of the following ions does not have the same electron configuration as the noble gas neon?

What is the formula of a compound formed by the ions M+ and X3-?

A chemical bond formed when electrons are transferred between atoms is called a(n)

Which of the following is NOT an example of a physical property?

An object weighs 77.0 Kg.  What does the object weigh in lbs?

Which product is formed by alpha emission from polonium-208? Complete the nuclear equation shown. Then choose the product below.