1. Tardigrade
  2. Question
  3. Chemistry
  4. A particular d-block element 'A' of 4 text th period has zero magnetic moment when it is in A+state. Then find the atomic number of the element in the periodic table which is just below this element.

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Q. A particular d-block element '$A$' of $4^{\text {th }}$ period has zero magnetic moment when it is in $A^{+}$state. Then find the atomic number of the element in the periodic table which is just below this element.

Classification of Elements and Periodicity in Properties

Solution:

In the d-block element only $Cu ^{+}$has no unpaired electron and it will have zero magnetic moment.
Hence the element has atomic number $z=29$.
and the element just below it has atomic number $=29+18$
$=47$