Advertisements
Advertisements
प्रश्न
There are 14 elements in actinoid series. Which of the following elements does not belong to this series?
पर्याय
U
Np
Tm
Fm
Advertisements
उत्तर
Tm
Explanation:
In the periodic table, actinides lie from atomic number 90 to 103.
Thulium is not an actinide; it is a lanthanide.
APPEARS IN
संबंधित प्रश्न
How would you account for the following:
The chemistry of actinoids is more complicated as compared to lanthanoids.
Give a reason for the following:
Actinoids show irregularities in their electronic configurations.
Write on similarity between the chemistry of 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 electronic configuration
Write one similarity and one difference between the chemistry of lanthanoid and actinoid elements.
What is the position of actinoids in periodic table ?
Manganese in the +2 oxidation state is more stable than +3 oxidation state where as iron is stable at +3 oxidation state than +2 oxidation state. Explain why?
Which of the following actinoids exhibits only + 3 oxidation state?
Actinoid series begins at ____________ and ends at ____________.
The highest oxidation state in plutonium (At. no. = 94) is ______.
Which among the following actinoids exhibits highest oxidation state +7?
Which among the following elements is radioactive?
Which of the following oxidation state is common for all lanthanoids?
What is actinoid contraction?
What causes actinoid contraction?
Why do actinoids show variable oxidation states?
