Structure of At...

In which sequence the radioactive radiations are emitted in the following nuclear reaction?
$$_{Z}X^{A} \rightarrow _{Z+1}Y^{A} \rightarrow _{Z-1}K^{A-4}  \rightarrow _{Z-1}K^{A-4}$$

Which of the following is inversely proportional to the square of principal quantum number in Bohr's atomic model?

If the boiling point of ethanol (molecular weight = 46 ) is $$78^o$$C, the boiling point of diethyl ether (molecular weight = 74) is 

In an atom having $$2K, 8L, 8M$$ and $$2N$$ electrons, the number of electrons with $$m=0$$; $$s=+\dfrac{1}{2}$$ are?

In a hydrogen like sample electron is in $$2nd$$ excited state, the binding energy of $$4th$$ state of this sample is $$-13.6\ eV$$, then incorrect statement is :

What is the maximum number of electrons that can be accommodated in the outermost orbit?

The speed of sound in air is $$v$$. Both the source and observer are moving towards each other with equal speed $$u$$. The speed of wind is$$w$$ from source to observer. Then, the ratio $$(\cfrac{f}{{f}_{0}})$$ of the apparent frequency to the actual frequency is given by

Suppose that in any Bohr atom (or) ion orbits are only in even numbers like $$2,4,6,....$$ the maximum wavelength of radiation emitted in the visible region of hydrogen spectrum should be ______________.

Which of the following orbitals has the lowest energy?

$${ M }^{ 3+ }$$ has electronic configuration as $$[Ar]{ 3d }^{ 10 }{ 4s }^{ 2 }$$. Hence it lies in: