Question

How is the mass defect determined? A. The mass defect is determined by measuring the mass of emitted alpha particles B. The parent nuclear mass is divided by the daughter nuclear mass. C. The mass of a nucleus is subtracted from the mass of its components. OD. The loss of mass of a nucleus is determined by looking at its line spectrum.​

Answer 1

C. The mass of a nucleus is subtracted from the mass of its components.

Step-by-step explanation:

The difference in the mass of a stable nucleus and the combined masses of its constituents (i.e. nucleons) is called “Mass Defect” or “Mass Deficit”. It is denoted by Δm.

Symbolically,

`\Delta m = (Zm_p+Nm_n)-m`

where,

Δm = mass defect

Z = Atomic Number

`m_p` = mass of Proton

N = Neutron Number

`m_n` = mass of Neutron

m = mass of Nucleus

Hence, the correct option is:

C. The mass of a nucleus is subtracted from the mass of its components.