Home
Class 12
CHEMISTRY
Assertion : Zn, Cd and Hg are not consid...

Assertion : Zn, Cd and Hg are not considered as transition metals.
Reason :d-orbitals in Zn, Cd and Hg are completely filled, both in ground state and in their available oxidation states.

A

If both (A) and (R) are correct and (R) is the correct explanation of(A).

B

If both (A) and (R) are correct, but(R) is not the correct explanation of (A).

C

If(A) is correct, but (R) is incorrect.

D

If both (A) and (R) are incorrect.

Text Solution

Verified by Experts

The correct Answer is:
A
Zn, Cd and Hg are normally not considered as transition metals because d-orbitals are completely filled, hence they do not show the general characteristic properties of the transition elements. Therefore, Zn, Cd and Hg are normally not considered transition metals
Doubtnut Promotions Banner Mobile Dark
|

Topper's Solved these Questions

  • THE D- AND F-BLOCK ELEMENT

    BRILLIANT PUBLICATION|Exercise LEVEL-II|100 Videos

  • SURFACE CHEMISTRY

    BRILLIANT PUBLICATION|Exercise QUESTIONS (LEVEL - II) (ASSERTION REASON TYPE QUESTIONS) |6 Videos

  • THE D-AND F-BLOCK ELEMENTS

    BRILLIANT PUBLICATION|Exercise QUESTIONS (LEVEL-III)|50 Videos

Similar Questions

Explore conceptually related problems

Account for the following:-Cd and Hg are normally not considerred as transition metals.

Silver atom has completely filled d- orbitals (4d") in its ground state. How can you say that it is a transition element?

Knowledge Check

  • Assertion : MnO is basic whereas Mn2O7, is acidic. Reason : Higher the oxidation state of a transition metal in its oxide, greater is the acidic character.

    A
    If both (A) and (R) are correct and (R) is the correct explanation of(A).
    B
    If both (A) and (R) are correct, but(R) is not the correct explanation of (A).
    C
    If(A) is correct, but (R) is incorrect.
    D
    If both (A) and (R) are incorrect.

  • The catalytic activity of transition metals and their compounds is mainly due to: a)their magnetic behaviour b)their unfilled d-orbitals c)their ability to adopt variable oxidation state d)their chemical reactivity

    A
    their magnetic behaviour
    B
    their unfilled d-orbitals
    C
    their ability to adopt variable oxidation state
    D
    their chemical reactivity

  • Assertion : MnO is basic whereas Mn_2 O_7 , is acidic. Reason : Higher the oxidation state of a transition metal in its oxide, greater is the acidic character.

    A
    If both (A) and (R) are correct and (R) is the correct explanation of(A).
    B
    If both (A) and (R) are correct, but(R) is not the correct explanation of (A).
    C
    If(A) is correct, but (R) is incorrect.
    D
    If both (A) and (R) are incorrect.

    • Similar Questions

    Explore conceptually related problems

    A transition element is defined as one which has incompletely filled d - orbitals in its ground state or in any one of its oxidation states Why are Zn Cd and Hg not regarded as transition metals?

    Silver atom has completely-filled d-orbital (4d^105 s^1) in its ground state. How can you say- it is a transition element?

    Transition metals show variable oxidation states due to tendency of ‘d’ as well as ‘s’ electrons to take part In bond formation:- Which element in the first series of transition elements does not exhibit variable oxidation states and why?

    Transition elements show various oxidation -states and many, of the transition metal ions are attracted by a magnetic field. a. Give reason for variability of oxidation state. b. Name the two types of magnetic behaviour. c. The observed magnetic moment of 'S c^(i+)' was found to be 'zero '. Calculate the magnetic. moment of '(Sc)^(3)', using the 'spin-only' formula and compare the result of observed and calculated magnetic moment.

    Assertion : Reduction of a metal oxide is easier if the metal formed is in liquid state at the temperature of reduction. Reason : The entropy is higher if the metal is in liquid state.

    Home
    Profile