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Why Zn^(2+) is diamagnetic whereas Mn^(2...

Why `Zn^(2+)` is diamagnetic whereas `Mn^(2+)` is paramagnetic ?

Text Solution

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`rarr Zn^(+2)` electronic configuration is `[Ar]4s^(0)3d^(10)`. It has no unpaired electrons. So it is dia magnetic.
`rarr Mn^(2+)` electronic configuration is `[Ar]4s^(0)3d^(5).` It has five unpaired electrons so it is paramagnetic.
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Knowledge Check

  • Identify the correct statements among the following I) The transition elements have partially filled (n-l) d orbitals. II) Cu is a better conductor of electricity than that of Ag. III) Sc^(+3), zn^(+2) are diamagnetic whereas Ti^(+4) is paramagnetic. IV) Transitional elemelilts are less electro-positive than alkalimetals

    A
    I, II only
    B
    I,II,III only
    C
    I,IV only
    D
    I,III only

  • Statement (A) Among the oxides of nitrogen, NO and NO_(2) are paramagnetic . Statement (B) NO is paramagnetic in the gaseous state and diamagnetic in liquid state. The correct answer is

    A
    (A) is correct (B) is not correct
    B
    Both (A) and (B) are not correct
    C
    (A) is not correct, (B) is correct
    D
    Both (A) and (B) are correct

  • List -I " " List -II (Bonds) A. CO_(2)" "1. 1, paramagnetic B. O_(2)" "2. 1, diamagnetic C. B_(2)" "3. 2, paramagnetic D. Li_(2)" "4. 2, diamagnetic " 5. 3, diamangetic

    A
    `{:(A" "B" "C" "D),(3" "5" "2" "1):}`
    B
    `{:(A" "B" "C" "D),(4" "3" "1" "2):}`
    C
    `{:(A" "B" "C" "D),(4" "2" "1" "3):}`
    D
    `{:(A" "B" "C" "D),(3" "2" "5" "4):}`

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