Atomic Structure · Chemistry · MHT CET

Calculate the frequency if wavelength is $$750 \mathrm{~nm}$$.

Find the number of orbitals and maximum electrons respectively present in $$\mathrm{M}$$-shell?

Calculate radius of third orbit of $$\mathrm{He}^{+}$$.

Which of the following electromagnetic radiations possesses lowest energy?

Calculate the wave number of photon emitted during transition from the orbit of $$n=3$$ to $$n=2$$ in hydrogen atom $$\left(R_H=109677 \mathrm{~cm}^{-...

Find the radius of fourth orbit of hydrogen atom if its radius of first orbit is $$\mathrm{R}$$ pm.

Which of the following pair of nuclides is an example of isotones?

Which from following coloured light has the highest energy?

What is the radius of the fourth orbit of hydrogen atom?

Calculate the frequency of blue light having wavelength $$440 \mathrm{~nm}$$.

Which of following pairs is an example of isoelectronic species?

Which of the following statements is NOT true about Bohr atomic model?

Which from following elements is isoelectronic with $$\mathrm{Na}^{+}$$?

Which from following equations is used to express the angular momentum of an electron in a stationary state?

Which emission transition series is obtained when electron jumps from $$\mathrm{n}_2=\infty$$ to $$\mathrm{n}_1=1$$ ?

What is the radius of fourth orbit of $$\mathrm{Be}^{+++}$$ ?

What is angular momentum of an electron in fourth orbit of hydrogen atom?

Which of the following species is NOT isoelectronic with neon?

Identify the physical quantity that is measured in Candela.

Identify degenerate orbitals from following for hydrogen atom.

Which of the following statements is NOT true about Rutherford atomic model?

What is the wave number of photon emitted during transition from orbit, $$\mathrm{n}=4$$ to $$\mathrm{n}=2$$ in hydrogen atom $$\left[R_H=109677 \math...

Which from following rule / principle states that "No two electrons in an atom can have the same set of four quantum numbers"?

Calculate the wavenumber of the photon emitted during transition from the orbit of $$n=2$$ to $$n=1$$ in hydrogen atom. $$\left[R_H=109677 \mathrm{~cm...

What is the energy of an electron in stationary state corresponding to $$\mathrm{n}=2$$ ?

What is the wavelength for a wave having frequency 50 Hz?

The wavelength of a spectral line of caesium is $$460 \mathrm{~nm}$$. What is the frequency of spectral line?

What is the value of frequency of radiation when transition occurs between two stationary states that differ in energy by $$\Delta \mathrm{E}$$ ?...

Identify an orbital with the quantum numbers n = 4, $$l$$ = 3, m = 0.

Identify the symbol used for water according to Dalton's atomic theory?