English

Two Nuclei Have Mass Numbers in the Ratio 1: 2. What is the Ratio of Their Nuclear Densities?

Advertisements
Advertisements

Question

Two nuclei have mass numbers in the ratio 1: 2. What is the ratio of their nuclear densities?

Advertisements

Solution

Nuclear density is independent of mass number. Hence, both the atoms have the same nuclear density.

shaalaa.com
  Is there an error in this question or solution?
2008-2009 (March) Delhi set 1

RELATED QUESTIONS

A nucleus with mass number A = 240 and BE/A = 7.6 MeV breaks into two fragments, each of A = 120 with BE/A = 8.5 MeV. Calculate the released energy.


The three stable isotopes of neon: `""_10^20"Ne"`, `""_10^21"Ne"` and `""_10^22"Ne"` have respective abundances of 90.51%, 0.27% and 9.22%. The atomic masses of the three isotopes are 19.99 u, 20.99 u and 21.99 u, respectively. Obtain the average atomic mass of neon.


If neutrons exert only attractive force, why don't we have a nucleus containing neutrons alone?


Potassium-40 can decay in three modes. It can decay by β-emission, B*-emission of electron capture. (a) Write the equations showing the end products. (b) Find the Q-values in each of the three cases. Atomic masses of `""_18^40Ar` , `""_19^40K` and `""_20^40Ca` are 39.9624 u, 39.9640 u and 39.9626 u respectively.

(Use Mass of proton mp = 1.007276 u, Mass of `""_1^1"H"` atom = 1.007825 u, Mass of neutron mn = 1.008665 u, Mass of electron = 0.0005486 u ≈ 511 keV/c2,1 u = 931 MeV/c2.)


Atomic mass unit (u) is defined as ________ of the mass of the carbon (12C) atom.


The valance electrons in alkali metal is a:-


The mass number of a nucleus is equal to the number of:-


Are the nucleons fundamental particles, or do they consist of still smaller parts? One way to find out is to probe a nucleon just as Rutherford probed an atom. What should be the kinetic energy of an electron for it to be able to probe a nucleon? Assume the diameter of a nucleon to be approximately 10–15 m.


Two nuclei have different mass numbers A1 and A2. Are these nuclei necessarily the isotopes of the same element? Explain.


Mass numbers of two nuclei are in the ratio of 4 : 3. Their nuclear densities will be in the ratio of ______.


Share
Notifications

Englishहिंदीमराठी


      Forgot password?
Use app×