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Chemical Properties of Boron Family

9.Total numbe...

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9.Total number of degenerate orbitals in the second excited state of lithium 2+ ion is

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Q. In a container a mixture is prepared by mixing of three samples of hydrogen, helium ion

{(H e}^{+})

and lithium ion

({L i}^{2 +})

In sample all the hydrogen atoms are in 1st excited state and all the He ions are in third excited state and all the

({L i}^{2 +})

ions are in fifth excited state Find the total number of spectral lines observed in the emission spectrum of such a sample, when the electrons return back upto the ground state

Q. A hydrogen atom makes a transition from

n = 2

n = 1

and emits a photon. This photon strikes a doubly ionized lithium atom

(z = 3)

in excited state and completely removes the orbiting electron. The least quantum number for the excited state of the ion for the process is

Q. Angular momentum in second Bohr orbit of H-atom is

x

. Then find out angular momentum in 1st excited state of

{L i}^{+ 2}

Q. In a container, a mixture is prepared by mixing of samples of hydrogen atom, helium ion

(H e^{+})

and lithium ion

(L i^{2 +})

. In the sample, all the hydrogen atoms are in

1^{s t}

excited stae and all the

H e^{+}

ions are in third excited state and all the

L i^{2 +}

ions are in fifth excited state. Find the total number of spectral lines observed in the emission spectrum of such a sample, when the electrons return back upto the ground state.

Q. What is the number of angular nodes in the second excited state of a hydride ion?

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