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The element yttrium, Y(Z = 39), belongs ...

The element yttrium, `Y(Z = 39)`, belongs to the_________period of the periodic table.

A

fourth

B

fifth

C

sixth

D

third

Text Solution

Verified by Experts

The correct Answer is:
B
Period number of the element is decided by the principal quantum number `(n)` of the last shell. The electronic configuration of yttrium is `[kr]4d^(1)5s^(2)`, the highest principal quantum number is five, thus, it is the element of the fifth period.
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Knowledge Check

  • An element of atomic number 16 will belong to the _________ period of the periodic table.

    A
    `5^(th)`
    B
    `6^(th)`
    C
    `3^(rd)`
    D
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  • d-block elements belong to __________periods of the periodic table.

    A
    `3 - 6`
    B
    `3 - 7`
    C
    `4 - 7`
    D
    `2 - 6`

  • An element has atomic no. 16 It will belong to which period of the periodic table ?

    A
    2
    B
    3
    C
    4
    D
    5

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