SATHEE: Atoms - Result Question 39

Atoms - Result Question 39

41. When a hydrogen atom is raised from the ground state to an excited state,

[1995]

(a) P.E decreases and K.E. increases

(b) P.E. increases and K.E decreases

(d) absorption spectrum

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Answer:

Correct Answer: 41. (d)

Solution:

(b) P.E. $= - \frac{K Z e^{2}}{r}$ and $K . E . = \frac{K Z e^{2}}{2 r}$ ,

where, $r$ is the radius of orbit which increases as we move from ground to an excited state. Therefore, when a hydrogen atom is raised from the ground state, it increases the value of $r$ . As a result of this, P.E. increases (decreases in negative) and K.E. decreases.

Atoms - Result Question 39

41. When a hydrogen atom is raised from the ground state to an excited state,

Answer:

Engineering Preparation

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Atoms - Result Question 39

41. When a hydrogen atom is raised from the ground state to an excited state,

Answer:

Engineering Preparation

Medical Preparation

NCERT Books & Solutions

Important Resources

Other Resources

Syllabus

Test Platform

Sample Mock Test

Mentorship

NCERT Exercise Video Solution

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