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प्रश्न
Name or state following with reference to the element of the first three periods of the periodic table.
The valency of elements in group 1 [I–A].
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उत्तर
Valency of elements in group [I–A] is +1
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संबंधित प्रश्न
Define the term : Atomic size
How does the valency of elements change of moving from left to right in the third period of the periodic table?
How does the valency of elements vary in going down a group of the periodic table?
Rewrite the following statement after correction, if necessary:
Elements in the same period have equal valency
What happens to the metallic character of the elements as we move from left to right in a period of the periodic table?
Arrange the following as per instruction given in the bracket
Na, K, Cl, S, Si (increasing ionisation potential)
Arrange the following in order of increasing radii:
Mg2+, Mg, Mg+
Name and state the following with reference to the elements of the first three periods of the periodic table.
Metalloid in Period 3.
Write the electronic configuration of two elements A and B whose atomic numbers are 20 and 17 respectively. Write the molecular formula of the compound formed when element A reacts with element B. State whether this compound is acidic, basic or neutral. Give a reason to justify your answer.
Name or state following with reference to the element of the first three periods of the periodic table.
The formula of the hydroxide of the element having electronic configuration 2, 8, 2.
