Atoms And Nuclei Question 260
Question: If the mass number of an atom is
Options:
A) 22, 18
B) 18, 22
C) 20, 20
D) 18, 18
Show Answer
Answer:
Correct Answer: A
Solution:
Number of protons = 2 + 2 + 6 + 2 + 6 = 18 Number of neutrons = 40 ? 18 = 22.
