Question

Deuterium nucleus contains

• A. $1p+1n$
• B. $2p+0n$
• C. $1p+1e^{-}$
• D. $2p+2n$

Answer 1

Answer: (A)

Deuterium, an isotope of hydrogen, is ${}_1{H}^2.$ Thus, it contains $1$ proton and $1(2-1)$ neutron in its nucleus.