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D and F Block Elements
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D and F Block Elements important questions for JEE Main cover chemical elements with unique properties which are Found in the middle of the periodic table, they offer a range of valence states and exhibit diverse coordination chemistry, and they are some of the important topics for JEE Main exams. Check out the table below for more information.
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1. What are the general properties of the d-block elements?
The properties of the d-block elements are as follows;
All the elements in the 3rd series, except copper, are considered good reducing agents.
The ionisation potential of the transition elements are said to increase by negligible amounts as a result of the shielding effect.
The transition elements have less reactivity. This reactivity decreases as a result of the result in the atomic number. and high enthalpies of atomization.
Due to the shielding of the valence shell electrons, provided by the electrons present in the d orbitals of the penultimate shell, the atomic radii of the transition elements undergo a decrease by negligible amounts.
2. What is the metallic character of the d-block elements?
It is to be noted that all the transition elements have, metallic nature and all of them consist of simple ccp hcp or bcc lattices. they have strong metallic bonds owing to their greater effective nuclear charge and also because they possess large numbers of valence electrons. They are considered hard possessing high densities. The presence of free electrons makes them good conductors of heat and electricity.
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3. Where to download the important questions for d and f block elements?
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4. What are the properties of lanthanides?
The properties of the lanthanides are given below;
They are said to be good conductors of heat and electricity.
Their melting points range from 1000K to 1200K. But it is to be noted that Samarium is an exception.
They are said to be soft metals with silvery-white color to them.
Their brightness reduces and dullness is witnessed in their color when they are exposed to air.
From lanthanum and lutetium, one observes a decrease in the atomic and ionic radii, which is termed as lanthanoid contraction.
They possess non-radioactive nature with the exception of promethium.
5. What are the similarities between lanthanides and actinides?
Both lanthanides and actinides are involved in filling (n-2) f orbitals.
Both Lanthanides and actinides possess oxidation states of +3.
Both Lanthanides and actinides are considered highly electropositive. They are also very reactive in nature.
Both lanthanides and actinides seem to present magnetic properties.
With the increase in the atomic numbers, a decrease in atomic and ionic size is witnessed in Lanthanides and actinides.
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