Chemistryhard · Past Paper
The number of neutrons in the nucleus of an atom with atomic number 'Z' and mass number 'A' is:
AZ
BA
CA - Z
DA + Z
✓ Correct Answer: C — A - Z
Mass number (A) = Protons (Z) + Neutrons. Thus, Neutrons = A - Z.
Share this question
More from Chemistry
- Which gas has a pungent smell and turns moist red litmus blue?
- Calculate the pH of a 0.01 M NaOH solution.
- In the modern periodic table, properties of elements are periodic functions of their:
- How many shells are there in a Sodium atom?
- In the balanced equation $xFe + yH_2O \rightarrow Fe_3O_4 + zH_2$, what are the values of x, y, and z?