Home
Class 12
CHEMISTRY
What is lanthanoid contraction ?...

What is lanthanoid contraction ?

Text Solution

Verified by Experts

Regular decrease in atomic radius with increase in atomic number in f-block elements is called lanthanoid contraction.
Doubtnut Promotions Banner Mobile Dark
|

Topper's Solved these Questions

  • THE D-AND F-BLOCK ELEMENTS

    U-LIKE SERIES|Exercise SHORT ANSWER QUESTIONS (2 marks each)|42 Videos

  • THE D-AND F-BLOCK ELEMENTS

    U-LIKE SERIES|Exercise LONG ANSWER QUESTIONS-I (3 marks each)|22 Videos

  • THE D-AND F-BLOCK ELEMENTS

    U-LIKE SERIES|Exercise FILL IN THE BLANKS|9 Videos

  • SURFACE CHEMISTRY

    U-LIKE SERIES|Exercise SELF ASSESSMENT TEST ( SECTION A)|7 Videos

  • THE P-BLOCK ELEMENTS

    U-LIKE SERIES|Exercise SELF ASSESSMENT TEST ( SECTION A)|7 Videos

Similar Questions

Explore conceptually related problems

(a) How would you account for the following : (i) Cobalt (II) is stable in aqueous solution but in the presence of strong ligands, it is easily oxidised. (ii) The transition metals form interstitial compounds. (iii) Silver halides find use in photography. (b) What is lanthanoid contraction ? Mention its main consequences.

(a) Why do transition elements show variable oxidation states? (i) Name the element showing maximum number of oxidation states among the first series of transition metals from Sc (Z = 21) to Zn (Z = 30). (ii) Name the element which shows only + 3 oxidation state. (b) What is lanthanoid contraction? Name an important alloy which contains some of the lanthanoid metals.

Knowledge Check

  • Lanthanoid contraction means :

    A
    small atomic sizes of lanthanoid elements
    B
    small ionic size of lanthanoid ions.
    C
    smaller atomic size of lanthanoids as compared to transition element in the same period
    D
    decrease in atomic and ionic radii of the element of lanthanoid series in moving from left to the right.

    • Similar Questions

    Explore conceptually related problems

    What is lanthanide contraction ? Give its cause. What are the consequences of lanthanide contraction ?

    (a) What is Lanthanoids contraction ? (b) What are Interstial compounds ? Give one example (c) Calculate the spin only magnetic moment of M^(2+)(aq) ion [Z=29].

    What is meant by lanthanoids contraction ? What effect does it have on the chemistry of element which follow lanthanoids ?

    What is meant by lanthanoid contraction ?

    What is meant by lanthanoid contraction ?

    What is meant by 'lanthanoid contraction'?

    Does actinoids show actinoid contraction similar to lanthanoid contraction ?

    Home
    Profile