Question

consider the scenario. an unknown element has been discovered. the atom contains 212 protons, 317 neutrons, and 212 electrons. what is the element’s atomic number and what is the element’s atomic mass? the atomic number is 212, and the atomic mass is 339. the atomic number is 339, and the atomic mass is 212. the atomic number is 212, and the atomic mass is 529. the atomic number is 317, and the atomic mass is 339.

Explanation:

Step1: Determine atomic number

The atomic number is equal to the number of protons. Given 212 protons, the atomic number $Z = 212$.

Step2: Calculate atomic mass

The atomic mass $A$ is the sum of protons and neutrons. So $A=212 + 317=529$.

Answer:

The atomic number is 212, and the atomic mass is 529. So the correct option is: The atomic number is 212, and the atomic mass is 529.