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प्रश्न
How does the number of valency vary on moving from left to right in the third period of the periodic table?
उत्तर
The valency of the elements increases from 1 (Na) to 4 (Si) and then declines to O (Ar) as moving from left to right in the third period of the periodic table.
संबंधित प्रश्न
The electronic configuration of an element T is 2, 8, 8, 1.
What is the valency of T?
Name the element which has a total of four shells with two electrons in its valence shell?
The metals of Group 2 from top to bottom are Be, Mg, Ca, Sr and Ba. State the common feature in the electronic configuration.
On moving down a group, the number of valence electrons ______.
How does number of valence electrons vary on moving from left to right in the third period of a periodic table?
Sodium and aluminum have atomic numbers 11 and 13, respectively. They are separated by one element in the periodic table and have valencies 1 and 3 respectively. Chlorine and potassium are also separated by one element in the periodic table (their atomic numbers being 17 and 19, respectively) and yet both have valency 1. Explain.
An element ‘A’ belongs to the third period and group 16 of the Periodic Table. Find out the valency of A.
Correct the statement.
Elements in the same period have the same valency.
An element has 2 electrons in its N shell.
What is the valency of this element?
Match the atomic number with the following:
A gaseous element with valency 2.
