Home
Class 12
CHEMISTRY
What are platinum metals ?...

What are platinum metals ?

Text Solution

Verified by Experts

The elements of the second and third triads of groups 8, 9 and 10, i.e., Ru, Rh, Pd, Os, Ir and Pt are called platinum metals.
Promotional Banner

Topper's Solved these Questions

  • d- AND- f- BLOCK ELEMENTS

    ICSE|Exercise EXERCISE (PART-II) (DESCRIPTIVE QUESTIONS)(SHORT ANSWER QUESTIONS)|50 Videos

  • d- AND- f- BLOCK ELEMENTS

    ICSE|Exercise EXERCISE (PART-II) (DESCRIPTIVE QUESTIONS)(LONG ANSWER QUESTIONS)|51 Videos

  • d- AND- f- BLOCK ELEMENTS

    ICSE|Exercise EXERCISE (PART-I)(MATCH AND FOLLOWINGS):|1 Videos

  • COORDINATION COMPOUNDS

    ICSE|Exercise ISC EXAMINATION QUESTION (PART- II DESCRIPTIVE QUESTIONS)|39 Videos

  • DISTINCTION BETWEEN PAIRS OF COMPOUNDS

    ICSE|Exercise QUESTIONS |155 Videos

Similar Questions

Explore conceptually related problems

What are alkali metals ? Describe their general characteristics.

What are coinage metals ?

What are alkali metals kept in Kerosene?

How many of the transition elements are called Platinum metals.

What is the minimum energy that proton must possess in order to produce photoelectric effect with platinum metal? The threshold frequency for platinum is 1.3× 10^15s^(−1)

What are antifriction metals ?

Calculate the current (in mA) required to deposite 0.195g of platinum metal in 5.0 hours from a solution of [PtCl_6^(2-) :(Atomic mass:Pt=195)

A platinum resistance thermometer reads 0^@ when its resistance is 80 Omega and 100^@ when its resistance is 90 Omega . Find the temperature at the platinum scale at which the resistance is 86 Omega .

What are metallic crystals ?

Poison for platinum, a catalyst in contact process of H_2 SO_4 is ___.

ICSE-d- AND- f- BLOCK ELEMENTS-EXERCISE (PART-II) (DESCRIPTIVE QUESTIONS)(VERY SHORT ANSWER QUESTIONS)
  1. What is meant by 'disproportionation'? Give an example of disproporti...

    Text Solution

    |

  2. Which elements are called ferrous metals ?

    Text Solution

    |

  3. What are platinum metals ?

    Text Solution

    |

  4. What is the highest oxidation state shown by a transition element.

    Text Solution

    |

  5. Name one ore each of manganese and chromium.

    Text Solution

    |

  6. What do you mean by 18 carat gold ?

    Text Solution

    |

  7. Out of Al, Zn, Mg and Fe which is the densest element?

    Text Solution

    |

  8. Which is more stable Fe^(2+) or Fe^(3+)? Why ?

    Text Solution

    |

  9. Why is Pt(IV) more stable than Ni(IV).

    Text Solution

    |

  10. K2 Pt Cl6 is well known compound while corresponding Ni compound is n...

    Text Solution

    |

  11. Why is electronic configuration 1s^2 2s^2 2p^6 3s^2 3p^6 3d^4 4s^2 n...

    Text Solution

    |

  12. How does the ionic/covalent character of the compounds of a transition...

    Text Solution

    |

  13. Why do transition elements have high value of hydration enthalpy?

    Text Solution

    |

  14. Why Fe^(2+) has smaller radius than Mn^(2+) ?

    Text Solution

    |

  15. Why do most transition metal ions exhibit paramagnetism ?

    Text Solution

    |

  16. How is the magnetic moment of a species related to the number of unpai...

    Text Solution

    |

  17. The electronic configuration of Co^(2+) and Cu^(2+) is d^7 and d^(9) r...

    Text Solution

    |

  18. Which of the following is paramagnetic ? Sc^(3+) (Z=21),Cu^(+)(Z=29)

    Text Solution

    |

  19. Why is Ti^(2+) ion paramagnetic ?

    Text Solution

    |

  20. One unpaired electron in an atom contributes a magnetic moment of 1.1 ...

    Text Solution

    |