Question

F.M=30
Answer the following Questions
1. Electrons will first enter into the orbital with the set of quantum numbers
2.
(A) n = 5, I = 1(B) n = 4, 1 = 1
(C) n = 3, 1 = 2
(D) any of these
The conclusion that every additional electron enters the orbital with lowest possible energy has bee
drawn from
(A) Pauli's exclusion principle(B) Hund's rule
(C) Aufbau principle(D) de-Broglie's equation
In which of the following electron distribution in ground state, only the Hund's rule is violated?
3.
25
2p
2s
2p
N
N
(A)
(B)
2 s
2p
2s
2p
11
1
(D)
According to Bohr's theory the angular momentum of an electron in the fourth orbit is
2h 3h 3h
(A) (B) (C)
2n
21
π
(D)
TT
In the atomic spectrum of hydrogen, the spectral lines pertaining to electronic transition of n = 4 to
n = 2 refers to
5.
(D) Brackett lines
6.
(A) Lyman lines
(B) Balmer lines
(C) Paschen lines
When 3p orbitals are completely filled. The new electron will enter in
7.
(A) 4s-orbitals(B)4p-orbitals(C) 3d-orbitals(D) None of these
How many electrons in k have n = 3:1 = 0 ?
(A) 1(B) 2(C) 4(D) 3
Which of the following orbital does not make sense?
8.
(A) 3d(B) 3f(C) 5p(D) 7s
The transition of electron from n = 3 to n = 1 in H atom produces
9.
(A) Emission spectrum(B) Absorption spectrum
(C) Paschen line(D) Pfund line
Indicate which electronic configuration amongst the following correctly represent SULPHUR atom?
(Atomic no. 16)
10.
(A) 1s 2s²2p 3s 3p%3d%(B) 1s 2s²2p®3s3pʻ4s
(C) 1s 2s 2p 3s 3p 45'4p'(D) 1s 2s 2p3s 3p
In H atom when electron jumps from 1s to 2s orbital,
11.
(A) energy is released(B) energy is absorbed
(C) the atom becomes cation(D) size of the atom decreased
When electrons revolve in stationary orbits,
12.
(A) there is no change in energy(B) they become stationary
(C) they are gaining kinetic energy(D) there is increase in energy
13
The spectrum of He is expected to be similar to that of
(C) Na
(A) Hydrogen
(B) LI
Isotopes of any atoms have
(D) He
14,​

Answer 1

Answer:

I don't know because I not a student of science