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प्रश्न
Use the periodic table to answer the following question.
Identify an element that would tend to lose two electrons.
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उत्तर १
An element having two valence electrons will lose two electrons easily to attain the stable noble gas configuration. The general electronic configuration of such an element will be ns2. This is the electronic configuration of group 2 elements. The elements present in group 2 are Be, Mg, Ca, Sr, Ba.
उत्तर २
Element belonging to alkaline earth family (group 2) e.g., magnesium
संबंधित प्रश्न
Use the periodic table to answer the following question.
Identify an element with five electrons in the outer subshell.
Use the periodic table to answer the following question.
Identify an element that would tend to gain two electrons.
Use the periodic table to answer the following question.
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Write the outer electronic configuration of the following using the orbital notation method. Justify.
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Write the outer electronic configuration of the following using the orbital notation method. Justify.
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Answer the following.
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Answer the following question.
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1s2
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Answer the following question.
For s-block and p-block elements show that the number of valence electrons is equal to its group number.
Consider the oxides Li2O, CO2, B2O3.
Which oxide would you expect to be the most basic?
Consider the oxides Li2O, CO2, B2O3.
Which oxide would be the most acidic?
Consider the oxides Li2O, CO2, B2O3.
Give the formula of an amphoteric oxide.
The period number in the long form of the periodic table is equal to ______.
An element belongs to 3rd period and group-13 of the periodic table. Which of the following properties will be shown by the element?
(i) Good conductor of electricity
(ii) Liquid, metallic
(iii) Solid, metallic
(iv) Solid, non metallic
How does the metallic and non-metallic character vary on moving from left to right in a period?
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E.N. of Si is ______. (Covalent radius of Si = 1.175 Å)
\[\ce{_92U^235}\] is a member of VI B group. The new element formed by the emission of α-particle will be a member of ______ group.
The IUPAC nomenclature of an element with electronic configuration [Rn] 5f146d17s2 is ______.
