Structure of At...

The $$d_{z^{2}}$$ orbital can give room only to:

After completion of ‘$$np$$’ level, the electron enters into which level according to $$(n+p)$$ rule?

Which of the following properties are similar for isotopes?

To which of the following is Bohr's theory applicable:
I) $$He^{+}$$ 

Which of the following energy state is filled by an electron after the completion of $$4p$$ orbital?

The atomic number at which filling of a g-orbital is likely to begin is:

The best evidence that electrons are arranged in definite orbits or energy levels is based on the observation that:

The band spectrum is caused by:

In the lowest energy level of hydrogen atom, electron has an angular momentum equal to:

In potassium, the order of energy levels is: