Popular Questions
- The number of 2 p-electrons having spin quantum number s=-1/2 are
- An electron with value 4, 3, -2 and +1/2 for the set of four quantum numbers N, l, Ml and Ms respectively belongs to
- The total number of orbitals possible for principle quantum number n is
- Which of the following is not permissible arrangement of electrons in an atom?
- Which of the following species have the same number of electrons in its outermost as well as penultimate shell
- Maximum number of electrons in a subshell of an atom is determined by the following:
- If uncertainty in position and momentum are equal, then uncertainty in velocity is:
- [Ar] (3d)^10, (4s)^1 electronic configuration belongs to
- The total number of electrons present in all the s orbitals, all the p orbitals and all the d orbitals of cesium ion are respectiv..
- The atomic number of Ni and Cu are 28 and 29 respectively. The electronic configuration (1s)^2 (2s)^2 (2p)^6 (3s)^2 (3p)^6 (3d)^10..
- Among the following series of transition metal ioms, the one in which all metal ions have (3d)^2 electronic configuration is (At n..
- The number of d-electrons retained in (Fe)^2+ (atomic number Fe=26) ions is
- The electronic configuration for (Cr)^3+ is
- Given : The mass of electron is 9.11*(10^-31) kg plank constant is 6.626*(10^-34) Js, the uncertainty involved in the measurement ..
- The maximum number of sublevels, orbitals and electrons in N-shell of an atom are respectively
- The highest number of unpaired electrons are in
- According to aufbau principle, the correct order of energy of 3d, 4s and 4p-orbitals is
- The stability of ferric ion is due to
- Electron density in the yz plane of 3d(x^2 y^2) orbital is
- Which of the following sets of quantum numbers represents the highest energy of an atom?
- The orbital angular momentum of an electron in 2s orbital is
- The radius of hydrogen atom in the ground state is 0.53 A. The radius of (Li)^2+ ion (atomic number = 3) in a similar state is
- The number of electrons accommodated in an orbit with principal quantum number 2, is
- The orbital angular momentum of an electron in a d-orbital is
- Which of the following sets of quantum numbers is correct for an electron in 4 f-orbital?
- Which combinations of quantum numbers n, l, m and s for the electron in an atom does not provide a permissible solution of the wav..
- If ionization potential for hydrogen atoms is 13.6 eV, then ionization potential for He+ will be
- Non-directional orbital is
- Which of the following value is the correct order of nuclear density?
- The nucleus of an atom consists of
- In Rutherford scattering experiment, what will be the correct angle for a scattering for an impact parameter b =0?
- In hydrogen atom, an electron jumps from bigger orbit to smaller orbit so that radius of smaller orbit is one-fourth of radius of ..
- If the electron in the hydrogen atom jumps from third orbit to second orbit the wavelength of the emitted radiation in term of Ryd..
- The ratio of the wavelength for 2 1 transition in Li++, He+ and H is
- If the ratio of radii of two spheres of same material is 1 : 4, then the ratio of their heat capacities is
- The ratio of radii of the nuclei, 13 Al^27 and 52Te^125 is
- Assume that a neutron breaks into a proton and an electron. The energy released during this process is (Mass of neutron =1.6725 * ..
- Assume that a neutron breaks into a proton and an electron. The energy released during this process is (Mass of neutron =1.6725 * ..
- The wavelength of first of line of Balmer series is 6563 A. The wavelength of first line of Lyman series will be
- a - particles of kinetic energy 7.7 MeV are being scattered by the nucleus of gold which has 79 electrons. The distance of closes..
