Question 1
Which horizontal row of the periodic table contains the most elements?
◦ row 5
◦ row 6
◦ row 4
◦ They all contain the same number of elements.
Question 2
Which of the following statements does
not describe a physical property of chlorine?
◦ The freezing point of chlorine is -101°C.
◦ The density of chlorine gas at standard temperature and pressure is 3.17 g/L.
◦ Chlorine combines with sodium to form table salt.
◦ The color of chorine gas is green.