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महाराष्ट्र राज्य शिक्षण मंडळएचएससी विज्ञान (सामान्य) इयत्ता १२ वी

Name the radioactive element in lanthanoids. - Chemistry

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प्रश्न

Name the radioactive element in lanthanoids.

एक शब्द/वाक्यांश उत्तर

उत्तर

Promethium (Pm)

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Properties of Lanthanoids
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पाठ 8: Transition and Inner transition Elements - Very short answer questions

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एससीईआरटी महाराष्ट्र Chemistry [English] 12 Standard HSC
पाठ 8 Transition and Inner transition Elements
Very short answer questions | Q 3

संबंधित प्रश्‍न

The following electronic configuration of elements shows highest oxidation state


Give the electronic configuration of europium (Z = 63).


Explain the trend in an Oxidation state of 3d elements.


The electronic configuration of transition element 'X' in +3 oxidation state is [Ar] 3d4. What is its atomic number?


Which statement(s) is/are CORRECT about applications of lanthanoid metals/ions and their compounds?

(I) The optoelectronics applications use lanthanoid ions as active ions in luminescent materials.

(II) Lanthanoid compounds are used in television tubes.

(III) Lanthanoids are used in hybrid cars, superconductors and permanent magnets.


The only radioactive element among the lanthanoids is ____________.


When lanthanoids (Ln) are heated to about 2800 K with carbon, the carbides with general formula ____________ are obtained.


What is the general molecular formula of the product obtained on reacting lanthanoids (Ln) with nitrogen?


Which is the INCORRECT property of lanthanoids?


Which element among the following lanthanoids has the smallest atomic radius?


What is the value of effective magnetic moment found in +3 oxidation state of Chromium (Z = 24)?


The observed electronic configuration of promethium (atomic number 61) is ____________.


Which of the following properties is NOT of lanthanoids?


Which among the following lanthanoids has smallest atomic size?


Give the properties of Lanthanoids.


Which of the following factors may be regarded as the main cause of lanthanoid contraction?


The most basic hydroxide from the following is:


Identify the last element in lanthanoid series.


Which element from following has largest atomic radius?


Give the electronic configuration of gadolinium (Z = 64).


Write expected and observed electron configurations of 58Ce.


Eu (Z = 63) and Yb (Z = 70) show + 2 oxidation state. Explain.


Write two uses of lanthanoids.


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