Structure Of An Atom

Question 1

Principal quantum numbers

Answer 1

Indicates the shell or orbit

N = 1, 2, 3, 4……..

Question 2

Azimuthal quantum numbers

Answer 2

It indicates the subshell or orbitals

L=0 to (n -1)

Question 3

Magnetic quantum numbers

Answer 3

Indicates orientation of the orbitals

M= -l to +l

Question 4

Spin quantum numbers

Answer 4

Indicates rotation

S= +1/2 , -1/2

Question 5

Aufbau principle

Answer 5

N + l

1S 2S 2P 3S 3p 4S 3D 4p 5S 4D 5p 6s 4f 5D 6p 7s 5f 6d 7p 8s

Question 6

Node

Answer 6

Radial note (n -1 -l)
Angular node (l)
Nodal plane (l)

Question 7

Photoelectric effect

Answer 7

E=hf

Question 8

H constant in photoelectric effect

Answer 8

H=6.626×10-³⁴ J/s

H=6.626 x10^-27 erg/sec

Question 9

Photon (hf)

Answer 9

hf=hfo + K.E

Question 10

Angular momentum

Answer 10

√l (l + 1) h/2π

h\2π= h—

Question 11

Li (3)

Answer 11

[he]2s¹

Question 12

Na(11)

Answer 12

[Ne] 3s¹

Question 13

K(19)

Answer 13

[Ar]4s¹

Question 14

Rb (37)

Answer 14

[kr]5s¹

Question 15

C’s(55)

Answer 15

[Xe]6s¹

Question 16

Fr (87)

Answer 16

[Rn]7s¹

Question 17

Who discovered electron

Answer 17

JJ Thomson in 1898

Question 18

Alpha particle scattering experiment was done by

Answer 18

Rutherford