41)

The stability of ferric ion is due to
 

JEE Physics

A)

completely filled d -orbitals

B)

completely filled f -orbitals

C)

half filled d -orbitals

D)

half filled f -orbitals

42)

A p-orbital in a given shell can accommodate upto

JEE Physics

A)

four electrons

 

 

 

B)

two electrons with opposite spin

C)

two electrons with parallel spin

D)

six electrons

43)

The correct set of four quantum number for the valence electrons of rubidium atom (Z = 37) is

JEE Physics

A)

5, 1, 0, + 1/2

 

B)

5, 0, 0, + 1/2

C)

5, 1, 1, + 1/2

D)

5, 0, 1, + 1/2

44)

The magnetic quantum number for d-orbital is given by

JEE Physics

A)

2

 

 

 

B)

5

C)

0, 1, 2

D)

0, ± 1, ± 2

45)

Which one of the following sets of quantum numbers represents the highest energy level in an atom?

JEE Physics

A)

 n = 3, l = 1, m = 1, s = +1/ 2

B)

 n = 4, l = 0, m = 0, s = + 1/ 2

 

C)

 n = 3, l = 0, m = 0, s = +1/ 2

D)

 n = 3, l = 2, m = -2, s = + 1/ 2

46)

Which of the following is correct for number of electrons, number of orbitals and type of orbitals respectively in n-orbit ?

JEE Physics

A)

4, 4 and 8

 

 

 

B)

4, 16 and 32

C)

32, 16 and 4

D)

4, 8 and 16

47)

The number of electrons accommodated in an orbit with principal quantum number 2, is

JEE Physics

A)

2

B)

6

C)

10

D)

8

E)

4

48)

Which of the following is not possible ?

JEE Physics

A)

n = 2, l = 0, m = -1

B)

n = 3, l = 0, m = 0

C)

n = 3, l = 1, m = -1

D)

n = 2, l = 1, m = 0

49)

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

JEE Physics

A)

n = 4, l = 3, m = + 1, s = + 1/2

B)

n = 4, l = 3, m = + 4, s = + 1/2

 

C)

n = 4, l = 4, m = - 4, s = - 1/2

D)

n = 3, l = 2, m = -2, s = + 1/2

50)

Non-directional orbital is

JEE Physics

A)

4p

B)

4d

C)

4f

D)

3s