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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].
उत्तर
Valency of elements in group [I–A] is +1
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संबंधित प्रश्न
Based on the group valency of elements state the formula lot the following giving justification for each :-
(i) Oxides of 1st group elements,
(ii) Halides of the elements of group 13, and
(iii) Compounds formed when an element of group 2 combines with, an element of group 16.
Write the number of horizontal rows in the modern periodic table. What are these rows called?
Which element has twice as many electrons in its second shell as in its first shell?
An element with the atomic number 19 will most likely combine chemically with the element whose atomic number is ______.
Name the element which is in first group and third period.
How does the number of:
valency vary on moving from left to right in the second period of the periodic table?
How can the valency of an element be determined if its electronic configuration is known?
Name and state the following with reference to the elements of the first three periods of the periodic table.
Valency of elements in Group 14 and 15.
An element A has 2 electrons in its fourth shell. State:
is it an oxidising or reducing agent
State the following:
The group which contains highly electropositive metals including sodium.
