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

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

fourth

fifth

sixth

third

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The correct Answer is:

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.

`5^(th)`

`6^(th)`

`3^(rd)`

`4^(th)`

d-block elements belong to __________periods of the periodic table.

`3 - 6`

`3 - 7`

`4 - 7`

`2 - 6`

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

R SHARMA-CLASSIFICATION OF ELEMENTS AND PERIODICITY IN ELEMENTS-Follow-up Test 7

The element yttrium, Y(Z = 39), belongs to theperiod of the periodic t...
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