Nuclei Test - 5...

For mass defect of $$0.3\%$$, the binding energy of $$1kg$$ material is :

Write the S.I. unit of activity.

The wavelength of  $$K _ { \alpha }$$  line for an element of atomic number  $$43$$  is  $$\lambda.$$  Then the wavelength of  $$K _ { \alpha }$$  line for an element of atomic number  $$29$$  is

The nuclear radius is given by $$R = r_0A^{1/3}$$ , where $$r_0$$ is constant and A is the atomic mass number.
Then :

Protons of energy $$2$$eV and $$2.5$$eV successively illuminate a metal whose work function is $$0.5$$eV. The ratio of maximum speed of emitted electron is _______.

The notation for an isotope of sodium $$^{23}_{11}Na$$. Which row gives the composition of a neutral atom of this isotope of sodium?

Molecular mass of dry air is ________________.

Which diagram represents a nucleus of $$^3_1H$$?

When the atomic number $$A$$ of a nucleus increases :

$$n=p+e$$, $$n=$$ neutron, $$p=$$ proton, $$e=$$ electron 
The decay equation is