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प्रश्न
Account for the following:
Zn, Cd and Hg are soft metals.
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उत्तर
Zn, Cd and Hg are soft metals due to absence of any unpaired electrons resulting weak metal-metal bonding.
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संबंधित प्रश्न
What are lanthanoids?
What are the different oxidation states exhibited by the lanthanoids?
Compare the chemistry of actinoids with that of the lanthanoids with special reference to atomic and ionic sizes.
Explain effects of lanthanoid contraction.
The f-block elements are known as ____________.
Although Zr belongs to 4d and Hf belongs to 5d transition series but it is quite difficult to separate them. Why?
Which one of the lanthanoids given below is the most stable in divalent form?
Mischmetal is an alloy consisting mainly of ______.
Why is Mn2+ ion more stable than Fe2+ ion?
(Atomic numbers of Mn = 25 and Fe = 26)
Assertion: There is a continuous increase in size among Lanthanoids with an increase in atomic number.
Reason: Lanthanoids do not show Lanthanoid contraction.
