How many `alpha` and `beta` particles will be emitted by an element `84^(A^(218))` is changing to a stable isotope of `82^(B^(206))`

Calculate the number of alpha and beta particles emitted in the conversion of 90^(Th^(232) to 82^(pb^(208)) .

The atomic mass of Th is 232 and its atomic number is 90. In terms of its radioactivity six alpha and four beta particles are emitted. What is the mass number and atomic number of the product.

The set A has 4 elements and set B has 2 elements how many relations are there from A to B

How many grams of each of the following elements must be taken to get 1 mol of the element ? (a) Sodium (b) Chlorine (C ) Copper

The isotope _(5)^(12) B having a mass 12.014 u undergoes beta - decay to _(6)^(12) C _(6)^(12) C has an excited state of the nucleus ( _(6)^(12) C ^(**) at 4.041 MeV above its ground state if _(5)^(12)E decay to _(6)^(12) C ^(**) , the maximum kinetic energy of the beta - particle in unit of MeV is (1 u = 931.5MeV//c^(2) where c is the speed of light in vaccuum) .

Monochromatic light of wavelength 632.8 nm is produced by a helium-neon laser. The power emitted is 9.42 mW. (a) Find the energy and momentum of each photon in the light beam, (b) How many photons per second, on the average, arrive at a target irradiated by this beam? (Assume the beam to have uniform cross-section which is less than the target area), and (c) How fast does a hydrogen atom have to travel in order to have the same momentum as that of the photon?

Monichromatic light of wavelength 632.8 nm Is produced by a helium-neon laser.The power emitted is 9.42 mW. (b)How many photons per second,on the average ,arrive at a target irradiated by this beam ? (Assume the beam to have uniform cross-section which is less than the target area),and (c )How fast does a hydrogen atom have to travel in order to have the same moementum as that of the photon?