In the periodic table, the elements touching the steplike line are known as ________.
A) transition elements
B) noble gases
C) metalloids
D) nonmetals
E) metals
Question 2
A compound that is composed of carbon, hydrogen, and oxygen contains 70.6 C, 5.9 H, and 23.5 O by mass. The molecular weight of the compound is 136 amu. What is the molecular formula?
A) C8H8O2
B) C8H4O
C) C4H4O
D) C9H12O
E) C5H6O2