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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 the element in period 3 having atomic number 17.
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उत्तर
Valency is 1 negative [−1]
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संबंधित प्रश्न
Write the atomic numbers of two elements 'X' and 'Y' having electronic configuration 2, 8, 2 and 2, 8, 6 respectively.
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.
How do atomic structures (electron arrangements) change in a period with increase in atomic numbers from left to right?
What is its atomic number?
An element has 2 electrons in its N shell.
State the name assigned to this group.
An element X belong to 3rd periods and group II of the periodic table state:
the valency,
Chorine in the periodic table is surrounded by the elements with atomic number 9, 16, 18 and 35.
Which is more electronegative than chlorine?
What is the common feature of electronic configurations of the elements at the end of period 2 and period 3?
The electronic configuration of an element is 2, 8, 4. State it:
name and write its one physical property.
Name or state following with reference to the elements of the first three periods of the periodic table.
The number of electron shells in elements of period 1, period 2, and period 3.
