What is the wavelength of the series limit of Paschen series of $H$ -spectra?

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Important Questions on Structure of Atom

MEDIUM

JEE Main

IMPORTANT

Chemistry Crash Course JEE Main>Chapter 25 - Structure of Atom>Level 2>Q 15

The electronic energy in a hydrogen atom is given by

E_{n} = - \frac{2.18 \times 10^{- 18}}{n^{2}} J {atom}^{- 1}

. What will be the energy required to remove an electron completely from

n = 2

and the longest wavelength of light in centimeters that can be used to cause this transition, respectively?

MEDIUM

JEE Main

IMPORTANT

Chemistry Crash Course JEE Main>Chapter 25 - Structure of Atom>Level 2>Q 16

In a hydrogen atom, electron de excites from the third excited state to the ground state. What is the frequency of emitted radiation?

EASY

JEE Main

IMPORTANT

Chemistry Crash Course JEE Main>Chapter 25 - Structure of Atom>Level 2>Q 17

Suppose that a hypothetical atom gives a red, green, blue & violet line spectrum. Which jump according to the figure would give off the red spectral line?

Question Image

MEDIUM

JEE Main

IMPORTANT

Chemistry Crash Course JEE Main>Chapter 25 - Structure of Atom>Level 2>Q 18

An electron in a hydrogen-like atom makes the transition from a state in which its de-Broglie wavelength is

λ_{1}

to a state where its de-Broglie wavelength is

λ_{2}

. What will be the wavelength of the photon (

λ

) generated?

EASY

JEE Main

IMPORTANT

Chemistry Crash Course JEE Main>Chapter 25 - Structure of Atom>Level 2>Q 19

In

H -

spectrum, on one side of Brackett series, lies the Paschen series while on other side lies the Pfund series, then the second line of Brackett series towards Pfund end is:

MEDIUM

JEE Main

IMPORTANT

Chemistry Crash Course JEE Main>Chapter 25 - Structure of Atom>Level 2>Q 20

Suppose the uncertainty in the position and velocity of a moving particle is