Advertisements
Advertisements
Question
Answer the following
What is meant by ‘shielding of electrons’ in an atom?
Solution
i. The decrease in the force of attraction exerted by the nucleus on the valence electrons due to the presence of electrons in the inner shells is called the shielding effect.
ii. As a result of the shielding effect, the effective nuclear charge experienced by the valence electron is less than the actual nuclear charge.
APPEARS IN
RELATED QUESTIONS
Answer the following
What are the stable oxidation states of plutonium, cerium, manganese, Europium?
Answer the following
Why nobelium is the only actinoid with a +2 oxidation state?
Answer the following
Explain with the help of a balanced chemical equation, why the solution of Ce(IV) is acidic.
Answer the following
The atomic number of an element is 90. Is this element diamagnetic or paramagnetic?
Answer the following
What is meant by diamagnetic and paramagnetic? Give one example of diamagnetic and paramagnetic transition metal and lanthanoid metal.
Why the ground-state electronic configurations of gadolinium and lawrentium are different than expected?
Answer the following
Cerium and Terbium behave as good oxidising agents in the +4 oxidation state. Explain.
Answer the following
Europium and ytterbium behave as good reducing agents in the +2 oxidation state explain.
What are the causes of lanthanide contraction?
Lanthanoids are characterized by the gradual filling of ______ orbitals.
What are inner transition elements?
