AIEEE 2005 | Structure of Atom Question 157 | Chemistry

In a multi-electron atom, which of the following orbitals described by the three quantum members will have the same energy in the absence of magnetic and electric fields?
(A) n = 1, l = 0, m = 0
(B) n = 2, l = 0, m = 0
(C) n = 2, l = 1, m = 1
(D) n = 3, l = 2, m = 1
(E) n = 3, l = 2, m = 0

(D) and (E)

(B) and (C)

(A) and (B)

AIEEE 2005

MCQ (Single Correct Answer)

-1

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