number of neutrons

In critical fission each fission of an unstable atom is allowed to retain just the right number of neutrons. This ensures that the number of atoms undergoing fission remains constant with time and does not go on multiplying endlessly. Enrico Fermi carried out the firs..

An equipment in which the nuclear chain reaction is carried out in a controlled manner is called a nuclear reactor. The energy liberated in a controlled manner is used to produce steam, which can run turbines and produce electricity. In nuclear reactors, the nuclear fission is controlled by control..

The atoms of different elements, which have the same mass number but different atomic number are called isobars. These have different number of protons but equal sum of the number of protons and neutrons..

These are the elements having same atomic number but different mass number. They have the same atomic number because the number of protons inside their nuclei remains the same. The difference in their mass number is due to the difference in their h..

The nucleus of an atom of an element contains 11 protons and 12 neutrons. Determine the atomic number and mass number of the elemen..

Rutherford and his co-workers, performed series of scattering experiments and concluded that the entire mass and the positive charge is concentrated in a very small region at the centre of the atom, known as nucleus. The radius of the nucleus is about 10 - 1 5 m i.e., 10 - 5 times that of the atom...

n - neutron U - 235 Uranium Ba - Barium Kr - Krypton E - Energy Note : The number of neutrons released in a uncontrolled chain reaction of U-235 nuclei is given by 3 n where n = 1,2,3,..... A Schematic Diagram Showing Essential Steps in a Chain Re..

All isotopes of the same element have the same number of protons, but a variable number of neutrons. The isotopes of hydrogen have the following structures (Fig.9.1)...

Isotopes are the different forms of the same element, which have the same atomic number but different mass numbers. The isotopes of hydrogen are protium, deuterium and tritium with mass number 1, 2 and 3 respectively. The relative abundance of three isotopes in nature..

Question: Define the following terms: a) Nucleons b) Atomic number c) Mass number d) Nucleus Answer: a) Nucleons: The particles found inside the nucleus i.e., protons and neutrons are called nucleons. b) Atomic number: The number of prot..