Structure of Atom questions
799 published questions with worked solutions.
- If wavelength of the first line of the Paschen series of hydrogen atom is 720 nm, then the wavelength of the second line of this...
- The number of given orbitals which have electron density along the axis is _________ p_x, p_y, p_z, d_ xy , d_ yz , d_ xz , d_...
- The radius of the 2^ nd orbit of Li^ 2+ is x. The expected radius of the 3^ rd orbit of Be^ 3+ is
- Assume that the radius of the first Bohr orbit of hydrogen atom is 0.6 Å. The radius of the third Bohr orbit of He^+ is...
- The wave function ( ) of 2s is given by _ 2s = 1 2 2 ( 1 a_0 )^ 1/2 (2- r a_0 )e^ -r/2a_0 At r = r_0, radial node is formed,...
- Maximum number of electrons that can be accommodated in shell with n = 4 are :
- The energy of one mole of photons of radiation of frequency 2 10^ 12 Hz in J mol^ -1 is ________. (Nearest integer) [Given : h =...
- Arrange the following orbitals in decreasing order of energy. A. n = 3, l = 0, m = 0 B. n = 4, l = 0, m = 0 C. n = 3, l = 1, m =...
- Which of the following elements have half-filled f-orbitals in their ground state ? (Given : atomic number Sm = 62; Eu = 63; Tb =...
- Which transition in the hydrogen spectrum would have the same wavelength as the Balmer type transition from n = 4 to n = 2 of...
- In a hydrogen atom, if energy of an electron in ground state is 13.6 eV, then that in the 2nd excited state is
- The orbital angular momentum for an electron revolving in an orbit is given by l(l+1) h 2 . This momentum for an s-electron will...
- In Bohr series of lines of hydrogen spectrum, the third line from the red end corresponds to which one of the following...
- Which of the following sets of quantum numbers is correct for an electron in 4f orbital?
- In a multi – electron atom, which of the following orbitals described by the three quantum numbers will have the same energy in...
- Which of the following statements in relation to the hydrogen atom is correct?
- According to Bohr's theory, the angular momentum of an electron in 5^ th orbit is
- Which of the following sets of quantum numbers represents the highest energy of an atom?
- The ionization enthalpy of hydrogen atom is 1.312 10^6Jmol^ -1 . The energy required to excite the electron in the atom from n =...
- Calculate the wavelength (in nanometer) associated with a proton moving at 1.0 10^3 ms^ -1 (Mass of proton = 1.67 10^ -27 kg and...
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