NEST2019ChemistryStructure of Atom
In H atom, the electron is bound by Coulomb interaction and its three quantum numbers n, l, m are related as n=1,2,3,4, ; l=0,1,2, n-1 ; m=-l,-(l-1), . .0 . .,(l-1), l . The spin quantum number s=1 / 2 and -1 / 2 . Thus, the maximum number of electrons that can occupy the first four shells (n=1,2,3,4) are 2,8,18,32 , respectively. In artificial atoms (atomic clusters), where the electrons are bound by spherical harmo
Options
- A8,20,40,70
- B6,18,38,68
- C6,12,20,30
- D2,8,18,32
Correct answer
A. 8,20,40,70
Step-by-step solution
No solution available.
Practice Structure of Atom on Quantrex Academy →
More from Structure of Atom
The frequency of photon which is emitted during a transition of electron of He ^+ ion from fifth energy level to third energy level will be: 2026Which of the following statement is correct ? 2026The wavelength of a particular electron transition for He ⁺ is 100 nm. The wavelength (in Å ) of H atom for the same transition is 2025The energy of second Bohr orbit of hydrogen atom is -3.4 eV. The energy of the fourth Bohr orbit of the He ⁺ ion will be 2025The work function of Cu is 7.68 10⁻¹⁹ ~J . If photons of wavelength 221 nm are made to strike the surface of the metal, the kinetic energy (in J) of the ejected electrons will be ( 2025In an element with atomic number (Z) 25 , the number of electrons with ( n+l ) value equal to 3 and 4 are x and y respectively. The value of (x+y) is 2025a , b , c , d are electromagnetic radiations. Frequencies of a , b are 3 10¹⁵ ~Hz , 2 10¹⁴ ~Hz , respectively, whereas wavelength of c, d are 400 ~nm , 750 ~nm , respectively. The 2025The number of electrons with magnetic quantum number, m _l=0 in the elements with atomic numbers Z=24 and Z=29 are respectively 2025
Full Structure of Atom list
All NEST PYQs
