Structure of At...

Which of the following hydrogen bonds are strongest in vapour phase?

The unfavorable electrochemical reaction among the following is:

Bohr's theory can be applied to determine the?

In a hydrogen atom the force acting on the electron is proportional to :

Which of the atomic number represents s -block elements?

Containers $$X,\ Y$$ and $$Z$$ of the equal volume contain oxygen, neon and methane respectively at the same temperature and pressure. The correct increasing order of their masses is:

Ratio of series limit of Brackett and Pfund series of hydrogen ato spectrum is

The radius of $$He^+$$ ion is $$x\ \mathring{A}$$  in its ground state. The radius of $$Li^{2+}$$ ion in the ground state ($$ \mathring{A}$$ ) is:

Identify the incorrect statement among the following:

Equivalent electric current created by electron of a H-atom in its ground using Bohr's model is nearly