The ratio of mass densities of nuclei of ""^( 40 ) C a and ""^( 16 ) O is close to :
The ratio of density of nuciel of O^(16) and Ca^(40) is :
What is the ratio of nuclear densities of the two nuclei having mass numbers in the ratio 1:4 ?
In a radioactive sample. ._(19)^(40)K nuclei either decay into stable ._(20)^(40)Ca nuclei with decay constant 4.5 xx 10^(-10) per year or into stable ._(18)^(40)Ar nuclei with decay constant 0.5 xx 10^(-10) per year. Given that in this sample all the stable ._(20)^(40)Ca and ._(18)^(40)Ar nuclei are produced by the ._(19)^(40)K nuclei only. In time t xx 10^9 years. If the ratio of the sum of stable ._(20)^(40)Ca and ._(18)^(40)Ar nuclei to the radioactive ._(19)^(40)K nuclei is 99. The value of t will be. [Given : In 10 = 2.3]
The ratio of nuclear density of two nuclei having mass number A_1=12 and A_2=14 is
Assertion: The density of the nuclei of all the atoms is same. Reason: It is because, density of nuclei is independent of mass number.
The mean density of the nuclei is proportinal to:
Calculate the ratio of radii of two nuclei with mass numbers in ratio 8 : 27.
