- [Easy]Which of the following orbitals does not exist?...
- [Medium]According to the Aufbau principle, which orbital is filled before 4p?...
- [Hard]An electron is accelerated through a potential difference of 100 V. Its de Broglie wavelength is approximately:...
- [Medium]The work function of a metal is 3.3 eV. What is the maximum wavelength of light that can cause photoelectric emission from this metal?...
- [Easy]Which series of hydrogen spectrum lies in the ultraviolet region?...
- [Easy]The correct electronic configuration of nitrogen (Z = 7) in its ground state, following Hund's rule, is:...
- [Medium]According to Pauli's exclusion principle, the maximum number of electrons in an atom that can have the quantum numbers n = 4 and m = -2 is:...
- [Easy]According to Heisenberg's uncertainty principle, which of the following statements is correct?...
- [Medium]The first ionization energy of hydrogen atom is 13.6 eV. What is the ionization energy of He⁺ ion?...
- [Medium]The number of unpaired electrons in Fe²⁺ (Z = 26) is:...
- [Medium]Which of the following sets of quantum numbers is not possible for an electron in an atom?...
- [Hard]The wavelength of the first line in the Balmer series of hydrogen spectrum is 656 nm. The wavelength of the second line of this series is approximatel...
- [Medium]The electronic configuration of chromium (Z = 24) is:...
- [Easy]According to Bohr's model, the energy of an electron in the nth orbit of a hydrogen atom is given by E = -13.6/n² eV. What is the energy of an electro...
- [Easy]The maximum number of electrons that can have n = 3 and l = 2 is:...