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प्रश्न
Where would you locate the element with electronic configuration 2, 8 in the modern periodic table?
पर्याय
Group 8
Group 2
Group 18
Group 10
उत्तर
Group 18
Explanation:
The element with an electronic configuration of (2, 8) belongs to group 18 (noble or inert gases) of the periodic table, as the elements in this group have their valence shell completely filled with electrons.
Group number = valence shell + 10
= 8 + 10 = 18.
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संबंधित प्रश्न
Taking the example of an element of atomic number 16, explain how the electronic configuration of the atom of an element relates to its position in the modern periodic table and how valency of an element is calculated on the basis of its atomic number.
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An element 'X' belong to 3rd period and group 13 of the Modern Periodic Table.
(a) Determine the valence electrons and the valency of 'X'.
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(c) Write the name and formula of the compound formed when 'X' combines with chlorine
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(a) increases
(b) decreases
(c) remain the same
(d) first increases then decreases
Select the correct answer
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