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प्रश्न
Arrange the following as per instruction given in the bracket.
Cs, Na, Li, K, Rb (increasing metallic character)
उत्तर
Cs, Na, Li, K, Rb (increasing metallic character)
Li < Na < K < Rb < Cs
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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.
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
How do electronic configurations of elements change in second period of periodic table with increase in atomic numbers?
In which part of a group would you separately expect the elements to have the greatest metallic character
The electronic configuration of the atom of an element X is 2, 8, 4. In modern periodic table, the element X is places in :
(a) 2nd group
(b) 4th group
(c) 14th group
(d) 8th group
What do you understand by periodicity?
Why are noble gases placed in a separate group?
Calculate the valency of element X whose atomic number is 9.
What is modern periodic law?
Give a reason for the following:
A transition from metallic to non-metallic elements is seen on moving from left to right in a period of the periodic table.
