Final answer:
The number of neutrons in the nucleus of an element with an atomic number of 22 and an atomic mass of 44 is 22 (atomic mass - atomic number).
Step-by-step explanation:
The student has asked for the number of neutrons in the nucleus of an element with an atomic number of 22 and an atomic mass of 44. To find the number of neutrons, you subtract the atomic number from the atomic mass number (number of neutrons = atomic mass - atomic number). Therefore, the number of neutrons in this element's nucleus is 22, which is the atomic mass (44) minus the atomic number (22), giving the answer B. 22.