Atoms questions
233 published questions with worked solutions.
- The total energy of electron in the ground state of hydrogen atom is -13.6 eV. The kinetic energy of an electron in the first...
- The wavelength of K_ -line in copper is 1.54 Å. The ionisation energy of K-electron in copper (in J) is
- In hydrogen atom spectrum, frequency of 2.7 10^ 15 Hz of electromagnetic wave is emitted when transmission takes place from 2 to...
- In Rutherford's experiment, the number of alpha particles scattered through an angle of 90^ is 28 per minute. Then, the number of...
- A diatomic molecule is made of two masses m_1 and m_2 which are separated by a distance r. If we calculate its rotational energy...
- Suppose an electron is attracted towards the origin by a force K r , where K is a constant and r is the distance of the electron...
- The largest wavelength in the ultraviolet region of the hydrogen spectrum is 122 nm. The smallest wavelength in the infrared...
- Hydrogen (_1 H ^1), deuterium (_1 H ^2), singly ionised helium (_2 He ^4)^+ and doubly ionised lithium (_3 Li ^8)^ ++ all have...
- The wavelength of the first line in Balmer series in the hydrogen spectrum is . What is the wavelength of the second line in the...
- In hydrogen emission spectrum, for any series, the principal quantum number is n. Corresponding maximum wavelength is (R =...
- If an electron is revolving around the hydrogen nucleus at a distance of 0.1 nm, what should be speed? [MHTCET 2009]
- Wavelength of first line in Lyman series is . The wavelength of first line in Balmer series is [MHTCET 2006]
- Maximum frequency of emission is obtained for the transition :
- In Hydrogen atom, energy of first excited state is -3.4 eV. Then find out KE of same orbit of Hydrogen atom :
- The total energy of electron in the ground state of hydrogen atom is -13.6 eV . The kinetic energy of an electron in the first...
- In the phenomenon of electric discharge through gases at low pressure, the coloured glow in the tube appears as a result of
- In a Rutherford scattering experiment when a projectile of charge z_1 and mass M_1 approaches a target nucleus of charge z_2 and...
- An electron in the hydrogen atom jumps from excited state n to the ground state. The wavelength so emitted illuminates a...
- Electron in hydrogen atom first jumps from third excited state to second excited state and then from second excited to the first...
- A piece of iron is heated in a flame. It first becomes dull red then becomes reddish yellow and finally turns to white hot. The...
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