Use naming rules to explain why the following statement is not correct. “The name of the formula PbCl4 is lead tetrachloride."

Asample of radium-226 will decay 1/4 of its original amount after 3200years. what is the half-life of radium-226?

In a laboratory, 1.55mg of an organic compound containing carbon, hydrogen, and oxygen is burned for analysis. this combustion resulted in the formation of 1.45mg of carbon dioxide and .89 mg of water. what is the empirical formula for this compound?

Write the chemical formula for a compound that is made of an element from group 1 and an element from group 17