21)

Impossible orbital among the following is

JEE Physics

A)

 3f

 

 

B)

 4d

C)

2s

D)

2p

22)

What is the maximum numbers of electrons that can be associated with the following set of quantum numbers?

n = 3, l = 1 and m = –1

 

JEE Physics

A)

6

B)

4

C)

2

D)

10

23)

Maximum number of electrons in a subshell with :

l = 3 and n = 4 is :

JEE Physics

A)

14

B)

12

C)

16

D)

10

E)

17

24)

The total number of atomic orbitals in fourth energy level of an atom is :

JEE Physics

A)

18

B)

17

C)

16

D)

32

E)

4

25)

The maximum number of sublevels, orbitals and electrons in N-shell of an atom are respectively

JEE Physics

A)

4, 12, 32

B)

4, 16, 30

 

 

C)

4, 16, 32

D)

4, 32, 64

26)

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

27)

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

28)

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

29)

The magnetic quantum number for d-orbital is given by

JEE Physics

A)

2

 

 

 

B)

5

C)

0, 1, 2

D)

0, ± 1, ± 2

30)

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