1

IIT-JEE 1993

Subjective

+5

-0

Estimate the difference in energy between 1st and 2nd Bohr orbit for a hydrogen atom. At what minimum atomic number, a transition from n = 2 to n = 1 energy level would result in the emission of X-rays with $$\lambda = 3.0 \times {10^{ - 8}}$$? Which hydrogen atom like species does this atomic number correspond to?

2

IIT-JEE 1993

Subjective

+3

-0

What transition in the hydrogen spectrum would have the same wavelength as the Balmer transition n = 4 to n = 2 of He

^{+}spectrum?3

IIT-JEE 1990

Subjective

+3

-0

According to Bohr's theory, the electronic energy of hydrogen atom in the n

^{th}Bohr's orbit is given by $${E_n} = {{ - 21.6 \times {{10}^{ - 19}}} \over {{n^2}}}J$$. Calculate the longest wavelength of light that will be needed to remove an electron from the third Bohr orbit of the He^{+}ion.4

IIT-JEE 1985

Subjective

+2

-0

Give reasons why the ground state outermost electronic configuration of silicon is:

Questions Asked from Structure of Atom (Subjective)

Number in Brackets after Paper Indicates No. of Questions

JEE Advanced Subjects

Physics

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Some Basic Concepts of Chemistry
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