SATHEE: Structure of Atom - Result Question 22

Structure of Atom - Result Question 22

####23. The spectrum of $H e$ is expected to be similar to that

[1988]

(a) $H$

(b) $L i^{+}$

(d) $H e^{+}$

Topic 3: Dual Behaviour of Matter and Heisenberg Uncertainty Principle

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Solution:

(b) Both $H e$ and $L i^{+}$ contain 2 electrons each, therefore their spectrum will be similar.

24 .

$\begin{aligned} λ & = \frac{2 π}{n} r \\ r_{n} & = a_{0} n^{2} \\ r_{2} & = 52.9 \times (2)^{2} p m \\ ∴ λ & = \frac{2 π}{2} \times 52.9 \times 4 \\ λ & = 211.6 π p m \end{aligned}$

Structure of Atom - Result Question 22

Topic 3: Dual Behaviour of Matter and Heisenberg Uncertainty Principle

Solution:

Engineering Preparation

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Structure of Atom - Result Question 22

Topic 3: Dual Behaviour of Matter and Heisenberg Uncertainty Principle

Solution:

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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