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Which of the following has the highest energy?

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Important Questions on Structure of Atom

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Chemistry Crash Course JEE Main>Chapter 25 - Structure of Atom>Level 1>Q 38
According to Bohr's model, what is the ratio between the kinetic energy and the total energy of the electrons in a hydrogen atom?
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Chemistry Crash Course JEE Main>Chapter 25 - Structure of Atom>Level 1>Q 39
In a hydrogen atom, two electrons move around the nucleus in circular orbits of radii, 4R and 9R, respectively. The ratio of the time taken by them to complete one revolution is:
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Chemistry Crash Course JEE Main>Chapter 25 - Structure of Atom>Level 1>Q 40
Calculate the energy emitted when electrons of 1 g atom of hydrogen undergo transition, giving spectral lines of the lowest energy in the visible region of its atomic spectra.
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Chemistry Crash Course JEE Main>Chapter 25 - Structure of Atom>Level 1>Q 41

Consider three electron jumps in H-atom:

X: n=3→1Y: n=4→2Z: n=5→3

For which transition, the electron will experience the largest change in orbit radius?

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Chemistry Crash Course JEE Main>Chapter 25 - Structure of Atom>Level 1>Q 42
2 g of hydrogen atoms are excited by radiation. The spectral study indicated that 25% of the atoms are in the third energy level, 20% atoms are in the second energy level and the rest in the ground state. What is the total energy evolved when the atoms return to the ground state?
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Chemistry Crash Course JEE Main>Chapter 25 - Structure of Atom>Level 1>Q 43
Which of the following elements contain non-spherical electron density?
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Chemistry Crash Course JEE Main>Chapter 25 - Structure of Atom>Level 1>Q 44
The ratio of the velocity of SO2 molecules to the velocity of O2 molecules such that they are associated with de Broglie waves of the same wavelength is
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Chemistry Crash Course JEE Main>Chapter 25 - Structure of Atom>Level 1>Q 45
The position of both an electron and a He atom is known within 1 nm and the momentum of the electron is known within 50×10-26 Kg ms. The minimum uncertainty in the measurement of the momentum of the He atom is: