Based on information from the periodic table, which statement is true for the element gallium?
31
Ga
69.7
O A. Agallium atom contains 31 protons, and neutral gallium atoms
contain 39 electrons.
O B. Agallium atom contains 31 protons, and most gallium atoms
contain 39 neutrons.
O C. The atomic number of gallium is 31, and its average atomic mass
is 39.
O D. The atomic number of gallium is 69.7, and its atomic mass is 31.