Quantrex Quantrex AcademyJEE · NEET · NDA PYQs with solutions Open app
NEETChemistryStructure of Atom

Match List-I with List-II. List-I (Ions) List-II (Spin-only magnetic moment in B.M.) (A) Fe ²⁺ (I) 1.73 (B) Mn ²⁺ (II) 2.84 (C) Ti ³⁺ (III) 4.90 (D) Ni ²⁺ (IV) 5.92 Choose the correct answer from the options given below:

Options

  1. A(A)-(IV), (B)-(III), (C)-(II), (D)-(I)
  2. B(A)-(III), (B)-(IV), (C)-(II), (D)-(I)
  3. C(A)-(II), (B)-(IV), (C)-(I), (D)-(III)
  4. D(A)-(III), (B)-(IV), (C)-(I), (D)-(II)

Correct answer

D. (A)-(III), (B)-(IV), (C)-(I), (D)-(II)

Step-by-step solution

The spin-only magnetic moment is calculated using the formula = n(n+2) B.M. , where n is the number of unpaired electrons. (A) Fe ²⁺ ( Z=26 ): [ Ar ] 3 d ^6 . It has 4 unpaired electrons ( n=4 ). = 4(6) = 24 4.90 B.M. (B) Mn ²⁺ ( Z=25 ): [ Ar ] 3 d ^5 . It has 5 unpaired electrons ( n=5 ). = 5(7) = 35 5.92 B.M. (C) Ti ³⁺ ( Z=22 ): [ Ar ] 3 d ^1 . It has 1 unpaired electron ( n=1 ). = 1(3) = 3 1.73 B.M. (D) Ni ²⁺ ( Z=28 ): [ Ar ] 3 d ^8 . It has 2 unpaired electrons ( n=2 ). = 2(4) = 8 2.84 B.M. Therefore, the corre

Practice Structure of Atom on Quantrex Academy →

More from Structure of Atom

Identify the pair of atoms of elements as isotones from the following. 2026Which of the following elements has an electronic configuration, [ Ar ] 4s^2 ? 2026Calculate the energy per mole of photons of red light with a wavelength 750 nm. [ h = 6.626 10⁻³⁴ Js, C = 3 10^8 m/s.] 2026Calculate the energy associated with an electron in the first orbit of hydrogen atom? 2026Find the wave number of the 4^ th line in the Lyman series of H spectrum. (R = Rydberg constant) 2026Calculate the de-Broglie wavelength of an electron having velocity 1000 ms ⁻¹ [ h = 6.626 10⁻³⁴ js , mass of an electron = 9.1 10⁻³¹ kg ] 2026How many total number of s and p electrons are respectively present in Cl ^- ? 2026Visible light has a wavelength of 700 nm. Calculate its frequency in hertz. 2026 Full Structure of Atom list All NEET PYQs