SATHEE: Structure of Atom - Result Question 18

Structure of Atom - Result Question 18

####18. The Bohr orbit radius for the hydrogen atom $(n = 1)$ is approximately $0.530 \AA$ . The radius for the first excited state $(n = 2)$ orbit is (in $\AA$ )

[1998]

(a) 0.13

(b) 1.06

(d) 2.12

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Solution:

(d) Radius of hydrogen atom $= 0.530 \AA$ , Number of excited state $(n) = 2$ and atomic number of hydrogen atom $(Z) = 1$ . We know that the Bohr radius.

$(r) = \frac{n^{2}}{Z} \times$ Bohr Radius of atom $= \frac{(2)^{2}}{1} \times 0.530$ $= 4 \times 0.530 = 2.12 \AA$

Structure of Atom - Result Question 18

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Structure of Atom - Result Question 18

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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