Home
Class 12
CHEMISTRY
The radius of a hydrogen atom is 5.32 xx...

The radius of a hydrogen atom is `5.32 xx10^(-11)` m and the radius of a proton at the centre is `1.5 xx 10^(-5)` m. The ratio of the radius of the atom to the radius of proton is :

A

`3.5 xx 10^(-6)`

B

`3.54 xx 10^(-6)`

C

`3.55 xx 10^(-6)`

D

`4 xx 10^(-6)`

Text Solution

Verified by Experts

The correct Answer is:
A
`("Radius of atom")/(Radius of proton") = (5.32 xx 10^(-11))/(1.5 xx 10^(-5) )`
` = 3.5 xx 10^(-6) `
answer is reported upto 2 significant figures as in 1.5
Promotional Banner

Topper's Solved these Questions

  • SOME BASIC CONCEPTS OF CHEMISTRY

    MODERN PUBLICATION|Exercise MULTIPLE CHOICE QUESTION (LEVEL-II)|100 Videos

  • SOME BASIC CONCEPTS OF CHEMISTRY

    MODERN PUBLICATION|Exercise MULTIPLE CHOICE QUESTION (LEVEL-III)|5 Videos

  • SOLUTIONS

    MODERN PUBLICATION|Exercise Recent Examination Questions|13 Videos

  • STATES OF MATTER

    MODERN PUBLICATION|Exercise RECENT EXAMINATION QUESTIONS|12 Videos

Similar Questions

Explore conceptually related problems

The value of Bohr radius for hydrogen atom is

The radius of the innermost electron orbit of a hydrogen atom is 5.3 xx 10^(–11) m . What are the radii of the n = 2 and n =3 orbits?

What is the unit of measurenmen of atomic radius ?

The K_c of an acid is 3.2 xx 10^(-5) . The degree of dissociation of the acid at concentration of 0.2 M is :

The gravitational attraction between electron and proton in a hydrogen atom is weaker than the coulomb attraction by a factor of about 10^(-40) . An alternative way of looking at this fact is to estimate the radius of the first Bohr orbit of a hydrogen atom if the electron and proton were bound by gravitational attraction. You will find the answer interesting.

The height and radius of a cone are in the ratio 12:5. if its volume is 314cm^(3) , find the slant height and the radius.

A circle passes through the points (-1,3) and (5,11) and its radius is 5. Then, its centre is