Home
Class 11
CHEMISTRY
The radius of the second Bohr orbit for ...

The radius of the second Bohr orbit for hydrogen atom is [Planck's constant `(h)=6.6262xx10^(-34)* Js`, mass of electron=`9.1091xx10^(-31)kg`, charge of electron `=1.60210xx10^(-19)C`, permittivity of vacuum `(in_(0))=8.854185xx10^(-12)kg^(-1)*m^(-3)*A^(2)`]-

A

0.526Å

B

2.12Å

C

1.65Å

D

4.76Å

Text Solution

Verified by Experts

The correct Answer is:
B
Promotional Banner

Topper's Solved these Questions

  • STRUCTURE OF ATOM

    ICSE|Exercise True Or False Type Questions|19 Videos

  • STRUCTURE OF ATOM

    ICSE|Exercise Fill in the Blanks Type Questions|20 Videos

  • STRUCTURE OF ATOM

    ICSE|Exercise Essay (Long Answer) Type Questions|15 Videos

  • STATES OF MATTER : GASES AND LIQUIDS

    ICSE|Exercise NCERT TEXT-BOOK EXERCISES (With Hints and Solutions)|23 Videos

  • THE s - BLOCK ELEMENTS

    ICSE|Exercise NCERT TEXT-BOOK. EXERCISES (WITH HINTS AND SOLUTIONS)|55 Videos

Similar Questions

Explore conceptually related problems

The circumference of second orbit of hydrogen atom, if the wavelength of electron is 5 xx 10^(-9)m will be

The kinetic energy of an electron is 4.55 xx 10^(-25) J .The mass of electron is 9.1 xx 10^(-34) kg . Calculate velocity of the electron.

If h is the Planck's constant, m = mass of the electron, e = charge of the electron and in_(0) = permittivity of vacuum, then (h^(2)in_(0))/(me^(2)) has the unit

Molar mass of electron is nearly : (N_(A) = 6 xx 10^(23)) , mass of e^(-) = 9.1 xx 10^(-31)Kg

The de Broglie wavelength of an electron with kinetic energy 120 e V is ("Given h"=6.63xx10^(-34)Js,m_(e)=9xx10^(-31)kg,1e V=1.6xx10^(-19)J)

Calculate the energy in joule corresponding to light of wavelength 45 nm : ("Planck's constant "h=6.63 xx 10^(-34)" Js: speed of light :"c =3 xx 10^8 "ms"^(-1)) .

When would the wavelength associated with an electron become equal to that with proton ? (Mass of electron = 9.10 xx 10^(-31) kg , Mass of proton =1.6725 xx 10^(-27)kg )

The ratio of electrostatic and gravitational force acting between electron and proton separated by a distance 5 xx 10^(-11)m , will be (charge on electron = 1.6 xx 10^(-19)C , mass of electron = 9.1 xx 10^(-31) kg , mass of proton = 1.6 xx 10^(-27) kg, G = 6.7 xx 10^(-11) N - m^(2)//kg^(2) )

The mass of an electron is 9.1xx10^(-31) kg and velocity is 2.99xx10^(10) cm s^(-1) . The wavelenth of the electron will be

The mass of an electron is 9. 1 xx 10^(-31) kg . If its K.E. is 3. 0 xx 10 ^(25) J . Calculate its wavelength .

ICSE-STRUCTURE OF ATOM-Objective (MCQ) TYPE Questions
  1. If n=6, the correct sequence for filling of electrons will be

    Text Solution

    |

  2. The correct set of four quantum numbers for the valence elections of r...

    Text Solution

    |

  3. What is the maximum number of orbitals that can be identified with the...

    Text Solution

    |

  4. Calculate the energy in joule corresponding to light of wavelength 45 ...

    Text Solution

    |

  5. Energy of an electron is given by E=-2.178'10^(-18)J Wavelength of...

    Text Solution

    |

  6. The electrons, identified by quantum numbers n and l(i) n=4,l=1 (ii) n...

    Text Solution

    |

  7. A gas absorbs photon of 355 nm and emits at two wavelengths. If one of...

    Text Solution

    |

  8. The frequency of light emitted for the transition n =4 to n =2 of He^+...

    Text Solution

    |

  9. The energy required to break one mole of Cl-Cl bonds in Cl2 is 242 kJ ...

    Text Solution

    |

  10. Which one is the wrong statement ?

    Text Solution

    |

  11. The radius of the second Bohr orbit for hydrogen atom is [Planck's con...

    Text Solution

    |

  12. The most abundant elements by mass in the body of a healthy human adul...

    Text Solution

    |

  13. Which one is wrong statement?

    Text Solution

    |

  14. 4d, 5p, 5f and 6p orbitals are arranged in the order of decreasing ene...

    Text Solution

    |

  15. Which of the following series of transitions in the spectrum of hydrog...

    Text Solution

    |

  16. In which of the following, energy of 2s orbital is minimum

    Text Solution

    |

  17. Which one of the following about an electron occupying the 1s orbital ...

    Text Solution

    |

  18. The size of the iso-electronic species Cl^(-), Ar and Ca^(2+) is affec...

    Text Solution

    |

  19. The quantum number of four electrons are given below: n=4,l=2,m(l)=-...

    Text Solution

    |

  20. If p is the momentum of the fastest electron ejected from a metal surf...

    Text Solution

    |