protons and neutrons mass

Nuclear - Binding energy - The sum of the individual masses of various particle in the nucleus must be equal to the nuclear mass. But this is not so in actual practice. The nuclear mass is somewhat less than the sum of the individual masses of various nuclear..

Atoms contain three fundamental particles namely electrons, protons and neutrons. Protons and neutrons constitute the nucleus whereas electrons are present in the extra nuclear region of the ato..

Alpha rays consist of stream of positively charged particles carrying charge of +2 units and a mass of four units on the atomic weight scale (i.e., 4 amu). They consist of 2 protons and 2 neutrons. In other words, these particles are helium nuclei and therefore indic..

Two consequences of nuclear reactions are the phenomena of nuclear fission and nuclear fusion. Both are important sources of nuclear energy, which may be used for peaceful or destructive purposes. When a nucleus is bombarded with some sub-atomic particles such as a - particles, neutrons, ..

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)...

The recurrence of similar properties of the elements when they are arranged in the order of increasing atomic number, after certain regular intervals, is called periodicity. Remember Relation between Mass Number and Atomic Number Atomic Number (Z) is the number of protons in the..

They are deflected by electric and magnetic fields. The deflection is less compared to that of b particles, because a particles are heavy. They affect a photographic plate and cause fluorescence on striking a fluorescent material. They ionise the gas through which they pass. The ..

. Notice that on each side of the equation the sum of the nucleon number is 31 and the sum of the proton number is 15. Phosphorus - 30 decays by ejecting a positron and has a half-life of about 3 minutes. The positron has not been mentioned before because it does not occurring natural rad..

The indivisibility of an atom was proved wrong, for, an atom can be further subdivided into protons, neutrons and electrons. However an atom is the smallest particle, which takes part in chemical reactions. According to Dalton, the atoms of same element are similar in all r..

Isotones Atomic number(Z) MassNumber(A) Electrons(e) Proton(p) Neutron(n) 14 C 6 6 14 6 6 8(14-6) 15 N 7 7 15 7 7 8(15-7) 16 O 8 8 16 8 8 8(16-8) Before we end let u..