Structure of Atom questions
799 published questions with worked solutions.
- The smallest matter particle that can take part in a chemical reaction is
- Which property of an element is always a whole number?
- X^ 2- is isoelectronic with _ 10 Ne. 1.6 g of X^ 2- has 0.1 mole. Calculate the number of neutrons in X^ 2- .
- Increasing order (lowest first) for the values of e/m for electron (e), proton (p), neutron (n) and -particles is
- Nuclear theory of the atom was put forward by **[AMU 2006]**
- Isotopes are **[OJEE 2003]**
- The electronic configuration of a dipositive ion M^ 2+ is 2, 8, 14, and its mass number is 56. The number of neutrons present is
- Which one of the following has a unit positive charge and 1 u mass? **[WB-JEE 2006]**
- The number of electrons and neutrons of an element are 18 and 20 respectively. Its mass number is
- The frequency of radiation emitted when the electron falls from n=4 to n=1 in a hydrogen atom will be (Given, ionisation energy...
- Bohr model can explain **[Manipal 2006]**
- Rutherford's experiment on the scattering of -particles showed for the first time that the atom has **[UP SEE 2005]**
- The wavelength of a spectral line emitted by a hydrogen atom in the Lyman series is 16 15R cm. What is the value of n_2? (R=...
- The wave number of the spectral line in the emission spectrum of hydrogen will be equal to 8 9 times the Rydberg constant if the...
- The energy of a hydrogen atom in its ground state is -13.6 eV . The energy of the level corresponding to n=5 is
- If the ionisation potential for a hydrogen atom is 13.6 eV, then the ionisation potential for He ^+ ion should be
- The angular momentum of an electron in the nth orbit of a hydrogen atom is given by
- The H-spectrum shows **[DCE 2005]**
- If the energy difference between the ground state of an atom and its excited state is 4.4 10^ -14 J , the wavelength of photon...
- The H atom electron dropped from n=3 to n=2; then the energy emitted is
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