Answer:
A.The atomic number is 31, the mass number is 67, and its symbol is 67/31 GA.
Explanation:
Statements are:
A.The atomic number is 31, the mass number is 67, and its symbol is 67/31 GA.
B.The atomic number is 31, the mass number is 67, and its symbol is 31/64 GA.
C.The atomic number is 67, the mass number is 31, and its symbol is 67/31 GA .
D.The atomic number is 67, the mass number is 31, and its symbol is 31/64 GA .
Atomic number is defined as the number of protons in an atom. The radionuclide has 31 protons. Its atomic number is 31. C and D are FALSE
In the nuclear notation, in the top you have mass number = Sum of protons + neutrons = 67. And in the bottom you have atomic number = 31.
Thus, right statement is:
A.The atomic number is 31, the mass number is 67, and its symbol is 67/31 GA.
