AIEEE 2005 | Structure of Atom Question 159 | Chemistry

Pick out the isoelectronic structure from the following :

$$\eqalign{ & \left( i \right)\,\,\,\,\,\,C{H_3}^ + \cr & \left( {ii} \right)\,\,\,\,{H_3}{O^ + } \cr & \left( {iii} \right)\,\,\,N{H_3} \cr & \left( {iv} \right)\,\,\,\,C{H_3}^ - \cr} $$

$$(i)$$ and $$(ii)$$

$$(iii)$$ and $$(iv)$$

$$(i)$$ and $$(iii)$$

$$(ii), (iii)$$ and $$(iv)$$

AIEEE 2004

MCQ (Single Correct Answer)

-1

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

n = 4, l = 3, m = +1, s = + 1/2

n = 4, l = 4, m = -4, s = - 1/2

n = 4, l = 3, m = +4, s = + 1/2

n = 3, l = 2, m = -2, s = + 1/2

AIEEE 2004

MCQ (Single Correct Answer)

-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

16 and 4

12 and 5

12 and 4

16 and 5

AIEEE 2004

MCQ (Single Correct Answer)

-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 $$\times$$ 10⁷ m^-1)

406 nm

192 nm

91 nm

9.1 $$\times$$ 10^-8 nm

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