who has more than one nuclei?

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. A g -ray photon has no rest mass and no charge. According to radioactive decay law, Where l is disintegration constant. Half life of a radioactive element is the time during which half the total number of atoms in the element (N 0 ) disintegrate, i.e., in Average life or mean life of radioactive ..

08. - A nucleus of UX 1 has a half life of 24.1 days. How long a sample of UX 1 will take to change 90% of it to UX 2..

02. - Determine the radius of the first orbit of the hydrogen atom. What would be the velocity and frequency of the electron in the first orbit? Given: h = 6.62 x 10 - 3 4 Js, m = 9.1 x 10 - 3 1 kg, e = 1.6 x 10 - 1 9 C, k = 9 x 10 9 N m 2 C - 2..

The emission of g - rays does not produce any change either in mass number or in the atomic number of the nucleus. Emission of g - rays is observed in virtually all nuclear reactions from the nuclei, which are left in excited state by an earlier emission of a or b - particle causing a dec..

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 indicated as 2 He 4 . ..

In Cucurbita, pollen tube enters the ovule through the integuments. After the pollen tube enters the embryosac, its apex dissolves and the male gametes are liberated. One of the male gametes fuses with the egg and produces a diploid zygote (Strassburger, 1884) which by further division ..