Question

Which of the following are ${ }_{16} S ^{32}$ and ${ }_{15} Pb ^{31}$ ?

• A. Isotopes
• B. Isotones
• C. Isobars
• D. Isomers

Answer 1

Answer: (B)

Isotones

Answer 2

Isotones are the nucleus that have same number of neutrons in them. ${ }_{16} S ^{32}:$ number of neutrons $=32-16=16$ ${ }_{15} P ^{31}:$ number of neutrons $=31-15=16$