Step 1: Identify Diamagnetic Ions
Diamagnetic ions are those that do not have unpaired electrons, meaning their electron configuration is fully paired.
Step 2: Examine the Given Ions
Step 3: Conclusion
The correct answer is: Option (1): Ce⁴⁺ and Yb²⁺ are diamagnetic.
Given below are two statements:
Statement I: Ferromagnetism is considered as an extreme form of paramagnetism.
Statement II: The number of unpaired electrons in a $Cr^{2+}$ ion (Z = 24) is the same as that of a $Nd^{3+}$ ion (Z = 60).
In the light of the above statements, choose the correct answer from the options given below:
Given below are two statements: One is labelled as Assertion (A) and the other is labelled as Reason (R).
Assertion (A): A typical unfertilized, angiosperm embryo sac at maturity is 8-nucleate and 7-celled.
Reason (R): The egg apparatus has 2 polar nuclei.
In the light of the above statements, choose the correct answer from the options given below: