number of protons

Protons and neutrons Nuclear forces Electromagnetic repulsion between the protons Nuclear fusion and fission reactions Radioactive isotopes Three most common forms of radioactive decay (alpha, beta, gamma) Changes in the nucleus in each type of decay Alpha, beta, an..

Radioisotopes - Naturally occurring radioactive substances have high nucleon number. It is possible to make artificial radioactive substances by bombarding lighter nuclides with - particles, protons or neutrons. The radioactive substances produced in this manner are known as rad..

Hydrogen atom (Z=1) has no neutrons. Number of protons = 1 Number of electrons = 1 Number of neutrons = 0 It has been reported that the hydrogen element has atoms with mass number 2 and 3 also i.e., Atoms of elements having the same atomic ..

Atom is the smallest particle of an element, which may or may not have independent existence. It is made up of subatomic particles like electrons, protons and neutrons. Atoms of one type of element differ from those of the other due to different number of subatomic particl..

Alpha decay is the phenomenon of emission of an a - particle from radioactive nucleus...

of a - particle. The equation for charge is 82 - (-1) = 82 + 1 = 93. But the nucleus is supposed to be made up of protons and neutrons only, so how can a - particle be emitted? A neutron in the nucleus has changed into a proton by emitting an electron. This leaves one more ..

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The reactions of amines are mainly due to participation of unshared pair of electrons of nitrogen which makes them react as a nucleophile or a base (A nucleophile is a species that attacks an electron - deficient carbon and a base is a species that attacks an electron deficient hydrogen i.e., ..

Einstein derived a formula given the relation between mass and energy as E = mc 2 . Here 'm' is the mass, 'c' is the velocity of light and 'E' is the energy. This equation has given equal states to mass and energy. It states that a mass m has energy E given by the above formula. Since the velocity ..

Atom is the smallest particle of an element, which may or may not have independent existence. It is made up of subatomic particles like electrons, protons and neutrons. Atoms of one type of element differ from those of the other due to different number of subatomic particles. ..