Using energy level diagram show emission of `gamma` rays by `""_(27)^(60)Co` nucleus and subsequent `beta` decay to obtain `""_(28)^(60)Ni`.

(a) Draw the energy level diagram showing the emission of beta -particles followed by gamma -rays by a ._(27)^(60)Co nucleus. (b) Plot the distribution of kinetic enrgy of beta -particles and state why the energy spectrum is continous.

Assertion:When a nucleus is in an excited state, it can make a transition to a lower energy state by the emission of gamma rays . Reason:These are energy levels for a nucleus just like there are energy levels in atoms .

The stabiliy of nuclies has been explained in terms of binding energy. Higher is binding energy, more is stabliliy to nucleus. The binding energy is written as B.E = 931.478 xx Delta m' MeV m wehre Delta m' is mass decayed in amu. If B.E.//"nucleon" lies below the belt of stablilty, the nucleus undergoes alpha- emission in order to lower down the energy level of nucleus but its n//p ratio increases. To lower down the energy level of nucleus but is n//p ratio increases. To lower down level of nucleus loses beta- particles and if stability is not gained, gamma- emission is noticed. A radioactive element on losing on alpha- particles shows a loss in its mass number by 4 units and atomic number by 2 units whereas beta- emission leads to a gain in at.no by one units and mass no. remains same. Durting K- electron capture, the emission is always in the region of:

The stabiliy of nuclies has been explained in terms of binding energy. Higher is binding energy, more is stabliliy to nucleus. The binding energy is written as B.E = 931.478 xx Delta m' MeV m wehre Delta m' is mass decayed in amu. If B.E.//"nucleon" lies below the belt of stablilty, the nucleus undergoes alpha- emission in order to lower down the energy level of nucleus but its n//p ratio increases. To lower down the energy level of nucleus but is n//p ratio increases. To lower down level of nucleus loses beta- particles and if stability is not gained, gamma- emission is noticed. A radioactive element on losing on alpha- particles shows a loss in its mass number by 4 units and atomic number by 2 units whereas beta- emission leads to a gain in at.no by one units and mass no. remains same. An element having n//p ratio greater than 1 will show:

The stabiliy of nuclies has been explained in terms of binding energy. Higher is binding energy, more is stabliliy to nucleus. The binding energy is written as B.E = 931.478 xx Delta m' MeV m wehre Delta m' is mass decayed in amu. If B.E.//"nucleon" lies below the belt of stablilty, the nucleus undergoes alpha- emission in order to lower down the energy level of nucleus but its n//p ratio increases. To lower down the energy level of nucleus but is n//p ratio increases. To lower down level of nucleus loses beta- particles and if stability is not gained, gamma- emission is noticed. A radioactive element on losing on alpha- particles shows a loss in its mass number by 4 units and atomic number by 2 units whereas beta- emission leads to a gain in at.no by one units and mass no. remains same. Total number of alpha- and beta- particles emitted during radioactive emssion of ._(92)^(235)U to attain stabilty is:

The stabiliy of nuclies has been explained in terms of binding energy. Higher is binding energy, more is stabliliy to nucleus. The binding energy is written as B.E = 931.478 xx Delta m' MeV m wehre Delta m' is mass decayed in amu. If B.E.//"nucleon" lies below the belt of stablilty, the nucleus undergoes alpha- emission in order to lower down the energy level of nucleus but its n//p ratio increases. To lower down the energy level of nucleus but is n//p ratio increases. To lower down level of nucleus loses beta- particles and if stability is not gained, gamma- emission is noticed. A radioactive element on losing on alpha- particles shows a loss in its mass number by 4 units and atomic number by 2 units whereas beta- emission leads to a gain in at.no by one units and mass no. remains same. An element having n//p ratio lesser than 1 and lying below the belt of stabiiliy shows:

The stabiliy of nuclies has been explained in terms of binding energy. Higher is binding energy, more is stabliliy to nucleus. The binding energy is written as B.E = 931.478 xx Delta m' MeV m wehre Delta m' is mass decayed in amu. If B.E.//"nucleon" lies below the belt of stablilty, the nucleus undergoes alpha- emission in order to lower down the energy level of nucleus but its n//p ratio increases. To lower down the energy level of nucleus but is n//p ratio increases. To lower down level of nucleus loses beta- particles and if stability is not gained, gamma- emission is noticed. A radioactive element on losing on alpha- particles shows a loss in its mass number by 4 units and atomic number by 2 units whereas beta- emission leads to a gain in at.no by one units and mass no. remains same. ._(90)^(228)Th overset(-alpha)(rarr) A ,If Th belongs to III gp of periodic table, then 'A' belongs to: