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प्रश्न
State the following:
The group to which the element with an electronic configuration of 2, 8, 2 belongs.
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उत्तर
Element [2, 8, 2] belongs to group 2 or [II – A]
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संबंधित प्रश्न
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'.
(b) Molecular formula of the compound formed when 'X' reacts with an element 'Y' (atomic number = 8).
(c) Write the name and formula of the compound formed when 'X' combines with chlorine
From the following elements :
4Be; 9F; 19K; 20Ca
(i) Select the element having one electron is the outermost shell.
(ii) two elements of the same group.
Write the formula of and mention the nature of the compound formed by the union of 19K and element X(2, 8, 7).
Fill in the blank in the following statement:
On moving form right to left in the second period, the number of valency electrons ...............
Name two properties of elements whose magnitudes change when going from top to bottom in a group of the periodic table. In what manner do they change?
An element X belong to 3rd periods and group II of the periodic table state:
the number of valence electrons,
Select the correct answer
Most reactive character among the elements given below is found in
Select the correct answer
Identify the metalloid
Use the letters only written in the Periodic Table given below to answer the questions that follow:
(a) State the number of valence electrons in the atom J.(b) Which element shown forms ions with a single negative charge?
(c) Which Metallic element is more reactive than R?
(d) Which element has its electrons arranged in four shells?
Arrange the following in order of increasing radii:
N, O, P
State the property trends in general of elements on moving from left to right in a period of the periodic table.
