Density of Nucleus
The nuclear density is independent of mass number A. The nuclear density is nearly constant and is equal to
ρ = (3m)/(4πR0 3) = 2.04×1017 kg/m3
where m is the mass of a nucleus
Atomic Mass Unit (u or amu)
One atomic mass unit is defined as (1/12)th of the actual mass of a carbon-12 atom. It is denoted by amu or u.
1 amu = (1/12)× Mass of carbon-12 atom
= (1/12) × 1.992678×10-26 kg
1 amu = 1.660565×10-27 kg
Electron Volt
It is defined as the energy acquired by an electron when it is accelerated through a potential difference of 1 volt and is denoted by eV.
1 eV = 1.602×10-19J
Relation between amu and MeV:
1 amu = 931 MeV
Structure of Nucleus
The nucleus of an atom consists of two types of particles, positively charged particles called protons and neutrally charged particles called neutrons. Protons + Neutrons in an atom represent the nucleus of an atom. The nucleus of an atom is represented by ZXA, where X is the nucleus of an atom, Z is the atomic number and A is the mass number.
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