Atomic Structure · JEE Main previous year questions

2004 5 questions

1. Q1502004 · 24 Apr 2004 · Shift 1

   Which of the following sets of quantum numbers is correct for an electron in 4f orbital?

   1. A.n = 4, l = 3, m = +1, s = + 1/2
   2. B.n = 4, l = 4, m = -4, s = - 1/2
   3. C.n = 4, l = 3, m = +4, s = + 1/2
   4. D.n = 3, l = 2, m = -2, s = + 1/2
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   Answer: A

2. Q1512004 · 24 Apr 2004 · Shift 1

   Consider the ground state of Cr atom (Z = 24). The number of electrons with the azimuthal quantum numbers, l = 1 and 2 are respectively

   1. A.16 and 4
   2. B.12 and 5
   3. C.12 and 4
   4. D.16 and 5
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   Answer: B

3. Q1522004 · 24 Apr 2004 · Shift 1

   The wavelength of the radiation emitted when in a hydrogen atom electron falls from infinity to stationary state 1, would be (Rydberg constant = $1.097\times 10^7{\mathrm{m}}^{-1}$)

   1. A.406 nm
   2. B.192 nm
   3. C.91 nm
   4. D.$9.1\times 10^{-8}$ nm
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   Answer: C

4. Q1942004 · 24 Apr 2004 · Shift 1

   Which one of the following complexes is an outer orbital complex?

   1. A.$[\mathrm{Fe}(\mathrm{CN}{)}_6{]}^{4-}$
   2. B.$[\mathrm{Ni}(\mathrm{N}{\mathrm{H}}_3{)}_6{]}^{2+}$
   3. C.$[\mathrm{Co}(\mathrm{N}{\mathrm{H}}_3{)}_6{]}^{3+}$
   4. D.$[\mathrm{Mn}(\mathrm{CN}{)}_6{]}^{4-}$
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   Answer: B

5. Q2122004 · 24 Apr 2004 · Shift 1

   Of the following outer electronic configurations of atoms, the highest oxidation state is achieved by which one of them?

   1. A.$(n-1)d^{3}n{s}^2$
   2. B.$(n-1)d^{5}n{s}^1$
   3. C.$(n-1)d^{8}n{s}^2$
   4. D.$(n-1)d^{5}n{s}^2$
   Show answer

   Answer: D