Home
Class 11
CHEMISTRY
Observer the following statements regard...

Observer the following statements regarding isotones `:`
`a.` `.^(39)K` and `.^(40)Ca` are isotones.
`b.` Nucleides having different atomic number `(Z)` and mass numbers `(a)` but same number of neutrons `(n)` are called isotones.
`c.` `.^(19)F` and `.^(23)Na` are isotones.
The correct answer is `-`

A

`a,b,` and `c` are correct

B

Only `a` and `b` are correct

C

Only `a` and `c` are correct

D

Only `b` and `c` are correct.

Text Solution

Verified by Experts

The correct Answer is:
2
Promotional Banner

Topper's Solved these Questions

  • AROMATIC COMPOUNDS

    RESONANCE|Exercise PART-II : JEE (MAIN)|1 Videos

  • CHEMICAL BONDING

    RESONANCE|Exercise Inorganic chemistry (Chemistry Bonding)|49 Videos

Similar Questions

Explore conceptually related problems

Observe the following statements regarding isotones i) .^(59)K_(19) and .^(40)Ca_(20) are isotones ii) Nuclides having different atomic numbers (z) and mass number (A) but same number of neutrons (n) are called Isotones iii) .^(19)F_(9) and .^(23)Na_(11) are isotones The correct answer is

Nuclides having some atomic number and same mass number but different rate of decay are called:

The nuclides with same atomic number "Z" but different mass number "A" are called

Assertion : ""_(14)Si^(30),""_(15)P^(31) and ""_(16)S^(32) are a group of isotones. Reason : Isotones are atoms of different elements having different mass numbers and atomic numbers but same number of neutrons in their nuclei.

Atoms with the same mass number but having different nuclear charges are called

RESONANCE-ATOMIC STRUCTURE-PHYSICAL CHEMISTRY(ATOMIC EQUILIBRIUM)
  1. The spin only magnetic of Cr^(3+) in aqueous solution would be :

    Text Solution

    |

  2. psi^(2)=0 represent

    Text Solution

    |

  3. Observer the following statements regarding isotones : a. .^(39)K an...

    Text Solution

    |

  4. If n(1) and n(2) are the boundary value principal quantum numbers of a...

    Text Solution

    |

  5. What is the potential energy of an electron present in N- shell of th...

    Text Solution

    |

  6. In which of the following transition, the wavelength will be minimum ...

    Text Solution

    |

  7. The ratio of kinetic energy and potential energy of an electron in a B...

    Text Solution

    |

  8. Total Number of unpaired electrons in d- orbitals of an atom element o...

    Text Solution

    |

  9. Photons of minimum energy 496k,J. mol^(-1) are needed to an atoms. Cal...

    Text Solution

    |

  10. According to Bohr's model, if the kinetic energy of an electron in 2^(...

    Text Solution

    |

  11. Last line of Lyman series for H- atom has wavelength lambda(1) A,2^(nd...

    Text Solution

    |

  12. Which electronic level would allow the hydrogen atom to absorbs a phot...

    Text Solution

    |

  13. Number of nomal planes ( planes of zero electron densit ) in the d(xy)...

    Text Solution

    |

  14. The uncertainty in position and velocity of the particle are 0.2mm and...

    Text Solution

    |

  15. A particle initially at rest having charge q coulomb, & mass m kg i...

    Text Solution

    |

  16. The number of possible lines of Paschenc series when electron jumps fr...

    Text Solution

    |

  17. AIR service on Vividh Bharati is transmitted on 219m band. What is its...

    Text Solution

    |

  18. Calculate the maximum and minimum number of electrons. Which may have ...

    Text Solution

    |

  19. In the emission spectrum of H- atom from energy level 'n' to ground s...

    Text Solution

    |

  20. The ionisation energy of H is 13.6 eV. Calculate the ionization energy...

    Text Solution

    |