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प्रश्न
An element A has 2 electrons in its fourth shell. State:
its valency
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उत्तर
Its valency is 2.
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संबंधित प्रश्न
How does the number of valence electrons vary on moving from left or right in the second period of the periodic table?
An element X belongs to group 2 and another element Y belongs to group 15 of the periodic table:
(a) What is the number of valence electron in X?
(b) What is the valency of X?
(c) What is the number of valence electrons in Y?
(d) What is the valency of Y?
Explain how you have arrived at your answers.
Why do elements in the same group show similar properties but the elements in different groups show different properties?
In which part of a group would you separately expect the elements to have the greatest metallic character
The element which has the maximum number of valence electrons is:
(a) Na
(b) P
(c) Si
(d) A
Which one of the following does not increase while moving down the group of the periodic table?
What do you understand by orbits?
Four elements P, Q, R and S belong to the third period of the Modern Periodic Table and have respectively 1, 3, 5 and 7 electrons in their outermost shells. Write the electronic configurations of Q and R and determine their valences. Write the molecular formula of the compound formed when P and S combine.
Name the elements in period 1.
What is meant by a Group in the Periodic Table?
