It is neither gravitational nor electrostatic force.It is a very short range attractive force.Nuclear forces are the strongest forces in nature. The force acting inside the nucleus or acting between nucleons is called nuclear force. The atoms of different elements having different atomic numbers and different mass numbers but having same number of neutrons, are called isotones.Į.g., 1H 3, 2He 4 and 6C 14, 8O 16 are isobars.Ītoms having the same mass number and the same atomic number but different radioactive properties are called isomers, The atoms of different elements having same mass numbers but different atomic numbers, are called isobars.Į.g., 1H 3, 2He 3 and 10Na 22, 10Ne 22 are isobars. are called isotopes.Į.g., 1H 1, 1H 2, 1H 3 are isotopes of hydrogen. The atoms of an element having same atomic number but different mass numbers.
It is abbreviated as arnu and often denoted by u. (v) Atomic Mass Unit It is defined as 1 / 12th the mass of carbon nucleus. Ρ = mass of nucleus / volume of nucleus ⇒ ρ = 3m / 4π R 3 o (iv) Nuclear Density Nuclear density is independent of mass number and therefore same for all nuclei. Where, R o = 1.1 * 10 -15 m is an empirical constant. (iii) Nuclear Size The radius of the nucleus R ∝ A 1/3 (ii) Mass Number The total number of protons and neutrons present inside the nucleus of an atom of the element is called mass number (A) of the element. (i) Atomic Number The number of protons in the nucleus of an atom of the element is called atomic number (Z) of the element. The nucleus consists of protons and neutrons. The entire positive charge and nearly the entire mass of atom is concentrated in a very small space called the nucleus of an atom. So, go ahead and check the Important Notes for Class 12 Physics Nuclear Physics With the help of Notes, candidates can plan their Strategy for particular weaker section of the subject and study hard.
Candidates who are pursuing in Class 12 are advised to revise the notes from this post.
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