MEDIUM
NEET
IMPORTANT
Earn 100

Neglecting the reduced mass effects, what optical transition in the He+ spectrum would have the same wavelength as the first Lyman transition of hydogen (n=2 to n=1)?

60% studentsanswered this correctly

Important Questions on Atoms

EASY
NEET
IMPORTANT
Chapterwise/Topicwise Daily Practice Problems (DPP) Optics and Modern Physics NEET>Chapter 4 - Atoms>TOPICWISE QUESTIONS>Q 1
The chemical behaviour of an atom is governed by its:
EASY
NEET
IMPORTANT
Chapterwise/Topicwise Daily Practice Problems (DPP) Optics and Modern Physics NEET>Chapter 4 - Atoms>TOPICWISE QUESTIONS>Q 2
Rutherford α-scattering demonstrates the existence of:
EASY
NEET
IMPORTANT
Chapterwise/Topicwise Daily Practice Problems (DPP) Optics and Modern Physics NEET>Chapter 4 - Atoms>TOPICWISE QUESTIONS>Q 3
The size of an atom is of the order of: 
EASY
NEET
IMPORTANT
Chapterwise/Topicwise Daily Practice Problems (DPP) Optics and Modern Physics NEET>Chapter 4 - Atoms>TOPICWISE QUESTIONS>Q 4
If elements with principal quantum number n>4 were not allowed in nature, the maximum number of possible elements would be:
MEDIUM
NEET
IMPORTANT
Chapterwise/Topicwise Daily Practice Problems (DPP) Optics and Modern Physics NEET>Chapter 4 - Atoms>TOPICWISE QUESTIONS>Q 5
If the radius of the first Bohr orbit in hydrogen atom is 0.53 Ao, then the radius of the third Bohr orbit would be:
MEDIUM
NEET
IMPORTANT
Chapterwise/Topicwise Daily Practice Problems (DPP) Optics and Modern Physics NEET>Chapter 4 - Atoms>TOPICWISE QUESTIONS>Q 6
The velocity of electron in the first Bohr orbit of He+ ions is, (Use the speed of light = c) 
EASY
NEET
IMPORTANT
Chapterwise/Topicwise Daily Practice Problems (DPP) Optics and Modern Physics NEET>Chapter 4 - Atoms>TOPICWISE QUESTIONS>Q 7
Rydberg unit of energy is equal to:
EASY
NEET
IMPORTANT
Chapterwise/Topicwise Daily Practice Problems (DPP) Optics and Modern Physics NEET>Chapter 4 - Atoms>TOPICWISE QUESTIONS>Q 8
The minimum orbital angular momentum of the electron in Bohr theory of hydrogen atom is: