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प्रश्न
There are 14 elements in actinoid series. Which of the following elements does not belong to this series?
विकल्प
U
Np
Tm
Fm
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उत्तर
Tm
Explanation:
In the periodic table, actinides lie from atomic number 90 to 103.
Thulium is not an actinide; it is a lanthanide.
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संबंधित प्रश्न
Distinguish between lanthanoid and actinoids.
With reference to structural variability and chemical reactivity, write the differences between lanthanoids and actinoids
Which is the last element in the series of the actinoids? Write the electronic configuration of this element. Comment on the possible oxidation state of this element.
Compare the chemistry of the actinoids with that of lanthanoids with reference to oxidation states
Compare the chemistry of the actinoids with that of lanthanoids with reference to chemical reactivity.
Write four points of distinction between Lanthanoids and Actinoids.
Write one similarity and one difference between the chemistry of lanthanoid and actinoid elements.
Which of the following actinoids exhibits only + 3 oxidation state?
Which of the following actinoids shows +6 oxidation state?
Identify the CORRECT statement.
The actinoid contraction is attributed to the ____________.
The electronic configuration of Ux+ ion is [Rn]. What is the value of x?
[At. No. of U = 92]
Which among the following actinoids exhibits highest oxidation state +7?
Which of the following properties is NOT of actinoids?
Which among the following elements is radioactive?
Maximum oxidation state exhibited by Chlorine is ______.
The incorrect statement among the following is:
What causes actinoid contraction?
