Home
Class 12
CHEMISTRY
The successive ionisation enthalpies of ...

The successive ionisation enthalpies of an element M are `5.98, 18.82, 28.44, 119.96, 153.77, ...... e V` atom What is the formula of chloride of M? 

Text Solution

Verified by Experts

Observing the `I_(1), I_(2), I_(3),I_(4),I_(5), ....` it is noticed that there is a sudden jump from `I_(3) and I_(4)`. This observation gives the idea that the element has 3 electrons in the outer most shell. `M^(+3)` state is stable and valency is 3.
Formula of chloride of M is `MCI_(3)`.
Promotional Banner

Topper's Solved these Questions

  • PERIODIC TABLE

    AAKASH SERIES|Exercise EXERCISE - 2.1.1|5 Videos

  • PERIODIC TABLE

    AAKASH SERIES|Exercise EXERCISE - 2.1.2|6 Videos

  • NUCLEAR CHEMISTRY

    AAKASH SERIES|Exercise PRACTICE SHEET - 2 (Integer answer type Questions )|8 Videos

  • POLYMERS

    AAKASH SERIES|Exercise OBJECTIVE EXERCISE - 4|59 Videos

Similar Questions

Explore conceptually related problems

Successive ionisation potentials of an element M are 8.3, 25.1, 37.9, 259.3 and 340.1ev. The formula of its bromide is

(a) Estimate the speed with which electrons emitted from a heated emitter of an evacuated tube impinge on the collector maintained at a potential difference of 500 V with respect to the emitter. Ignore the small initial speeds of the electrons. The specific charge of the electron, i.e., its e/m is given to be 1.76 xx 10^(11) C kg^(-1) . (b) Use the same formula you employ in (a) to obtain electron speed for an collector potential of 10 MV. Do you see what is wrong ? In what way is the formula to be modified?

Suppose that the electric field part of an electromagnetic wave in vacuum is E={(3.1 N/C) cos [(1.8 rad/m)y+{5.4 xx10^(6) rad/s} t]} i. What is the frequency v ?

De Broglie poroposed that moving micro particles exhibit wave behaviours. Electron in a Bohr.s orbit also shows dual nature whose wave length is given by lambda_(e) = (h)/(m_(e)V_(e)) m_(e) = mass of electron , V_(e) = velocity of electron , h = planck.s constant Bohr.s atomic model is in good agreement with De-broglie concept and the electron has fixed energy in Bohr.s orbit : 2pi r = n lambda (constructive wave in phase). The kinetic energy of an electron in alpha Bohr.s orbit of H-atom is 3.4 eV. What is the its De-broglie.s wave length ?

Suppose that the electric field part of an electromagnetic wave in vacuum is E={(3.1 N/C) cos [(1.8 rad/m)y+{5.4 xx10^(6) rad/s} t]} i. What is the amplitude of the magnetic field part of the wave ?

Calculate the mass of urea ("NH"_(2)"CONH"_(2)) required in making 2.5 kg of 0.25 molar aqueous solution. We know that molarity (m) =("Moles of solute")/("Mass of solvent in kg") and moles of soute =("Mass of solute")/("Molar mass of solute") So, find the molar mass of solute by adding atomic masses of different element present in it and mass by using the formula, Molality =("Mass of solute/molar mass of solute")/("Mass of solvent in kg")

Numerous forms of the periodic table have been devised from time to time. A modern version which is most convenient and widely used is the long or extended from of periodic table. The aufbau principle and the electronic configuration of atoms provide a theoretical foundation for the periodic classification. The horizontal rows are called periods. There are altogether seven periods. The first period consists of 2 elements. The subsequent periods consists of 8, 8,18, 18 and 32 elements respectively. The seventh period is incomplete and like the sixth period would have maximum of 32 elements. Elements having similar outer electronic configurations in their atoms are grouped in vertical columns. These are referred to as groups or families. According to the recommendations of IUPAC, the groups are numbered 1 to 18 replacing the older notation of groups 0, IA, IIA, ....VIIA, VIII, IB.....VIIB. Each successive period in the periodic table is associated with the filling up next higher principal energy level following aufbau sequence. The number of elements in each period is twice the number of atomic orbitals available in the energy level that is being filled. All the elements are classified into four blocks, i.e., s-block, p-block, d-block, and f-block depending on the type of atomic orbitals that are being filled with electrons. An element belongs to group 17 with atomic number is 17. What is the atomic number of the element belonging to same group and present in fifth period?

A compound is formed by two elements M and N . The element N forms ccp and atoms of M occupy (1)/(3) rd of tetrahedral voids . What is the formula of the compound ? i) Find the number of tetrahedral voids as number of tetrahedral voids = 2 xx number of atoms present in the lattice . ii) Calculate the number of atoms (or ratio) of elements M and N as a chemical formula represents the number of atoms of different elements presents in a compound . iii) Derive the formula .

AAKASH SERIES-PERIODIC TABLE-QUESTIONS FOR DESCRIPTIVE ANSWERS
  1. The successive ionisation enthalpies of an element M are 5.98, 18.82, ...

    Text Solution

    |

  2. Write on the IUPAC nomenclature of the elements with atomic number gre...

    Text Solution

    |

  3. What are the groups, periods and blocks of the elements with atomic nu...

    Text Solution

    |

  4. How are the elements classified based on thedifferentating electron co...

    Text Solution

    |

  5. Knowing the electronic configuration of an element, its position in th...

    Text Solution

    |

  6. What is electronegativity? How is this useful in understanding the nat...

    Text Solution

    |

  7. How does the position of element in the periodic table useful in findi...

    Text Solution

    |

  8. Write the important applications of electronegativity.

    Text Solution

    |

  9. What is electron gain enthalpy? On what factors does it depend?

    Text Solution

    |

  10. What is the role played by the  inner electrons on the radius and ioni...

    Text Solution

    |

  11. Write the differences between ionisation enthalpy and electron gain en...

    Text Solution

    |

  12. Write the increasing order of ionisation enthalpies of Be, B, C, N and...

    Text Solution

    |

  13. Which among the following should have a smaller second ionisation ener...

    Text Solution

    |

  14. How are bond energies useful for the calculation of electronegativity?

    Text Solution

    |

  15. Both ionisation enthalpy and electron gain enthalpy have some irregula...

    Text Solution

    |

  16. With reference to the periodic table, name the following : (a) the h...

    Text Solution

    |

  17. Mention different chemical criteria to call an element as metal.

    Text Solution

    |

  18. How do you account for the highly electro-positive nature of alkali me...

    Text Solution

    |

  19. What are anhydrides? Write exmples of acidic and basic anhydrides.

    Text Solution

    |

  20. Alkali metals are good reductants and halogens are good oxidants. Why?

    Text Solution

    |

  21. Comment on the following : (a) vertical relationship of elements, (b...

    Text Solution

    |