Find out the number of waves made by a bohr electron in one complete revolution in its 3rd orbit.

The energy of separationof an of an electron is 30.6eV moving in an orbit of Li^(+2) Find out the number of waves made by the electron in one complete revolution in the orbit

Calculate the number of waves made by a Bohr electyron in one complete revolution in n ^(th) orbit of H-atom, if ratio of de-Broglie wavelength asssociated with electron moving in n^(th) orbit and 2^(nd) orbit is 1.5.

Number of waves produced by an electron in one complete revolution in n^(th) orbit is :

Find the number of proton & electron in Al3+ ion ?

Write the postulates of Bohr’s Atomic model and on the basis of this model find an expression for the wave number of a wave emitted by an electron when it jumps from an outer orbit to inner orbit.

The circle (x-a)^2 + (y-a)^2 = a^2 is rolled on the y-axis in the positive direction through one complete revolution. Find the equation of the circle in its new position.

A committee of 3 members is to be formed out of 5 men and 2 women. Find the number of ways of selecting the committee if it is to consist of at least one woman .

Calculate the number of unpaired electrons in the following gaseous ions: Mn3+, Cr3+, V3+ and Ti3+. Which one of these is the most stable in aqueous solution?