48. The half-life of 210Po is 140 days. Will degradation occur every second at 1 gram 210Po? (Avagadro number = 6.023 1023)

Po^210 has half-life of 140 d. In 1g Po^210 how many disintegration will take place every second ? [Avogadro's number = 6.023xx10^23 ]

The half-life of Ra^(226) is 1620 years. Then the number of atoms decay in one second in 1 g of radium(Avogadro number = 6.023xx omega xx 10^(23) ).

Find the half life of U^(238) , if one gram of it emits 1.24xx10^4 alpha -particle per second. Avogadro's Number =6.023xx10^(23) .

Find the half life of U^(238) , if one gram of it emits 1.24xx10^4 alpha -particle per second. Avogadro's Number =6.023xx10^(23) .

Ra^(226) has half life of 1600 years. The number of disintegration per second per gram is

The half-life of Bi^210 is 5 days. What time is taken by (7//8)^th part of the sample of decay ?

Half life of ""^(226)Ra is 1600 years. How many distintegrations per second occur in 1 gram of ""^(226)Ra ?

The activity of 1 g. of a sample of Po^210 is 4442 Ci. Determine the half-life of the element. (Avogadro's number = 6.023xx10^23 )