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प्रश्न
Justify the given statement with suitable examples— “the Properties of the elements are a periodic function of their atomic numbers”.
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उत्तर
The chemical properties and physical properties of the elements depends upon its outer electron configuration which ultimately is the periodic function of the atomic number. The elements which possess the same outer electron configuration belong to the same group or family showing similar properties.
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संबंधित प्रश्न
Assign the position of the element having an outer electronic configuration in the periodic table.
ns2 np4 for n = 3
Assign the position of the element having an outer electronic configuration in the periodic table.
(n - 1)d2 ns2 for n = 4
Assign the position of the element having an outer electronic configuration in the periodic table.
(n - 2) f7 (n - 1)d1 ns2 for n = 6
Write the outer electronic configuration of the following using the orbital notation method. Justify.
Ge (belongs to period 4 and group 14)
Write the outer electronic configuration of the following using the orbital notation method. Justify.
Po (belongs to period 6 and group 16)
Write the outer electronic configuration of the following using the orbital notation method. Justify.
Cu (belongs to period 4 and group 11)
Consider the oxides Li2O, CO2, B2O3.
Which oxide would you expect to be the most basic?
Consider the oxides Li2O, CO2, B2O3.
Give the formula of an amphoteric oxide.
The first ionisation enthalpies of \[\ce{Na, Mg, Al}\] and \[\ce{Si}\] are in the order:
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
Identify the group and valency of the element having atomic number 119. Also predict the outermost electronic configuration and write the general formula of its oxide.
How does the metallic and non-metallic character vary on moving from left to right in a period?
Write down the outermost electronic configuration of alkali metals. How will you justify their placement in group 1 of the periodic table?
The electronic configuration of Pt (atomic number 78) is ______.
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.
