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प्रश्न
Arrange the elements of second and third periods in increasing order of their atomic size (excluding noble gases).
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उत्तर
Second Period: Fluorine < Oxygen < Nitrogen < Carbon < Boron < Beryllium < Lithium.
Third Period: Chlorine < Sulphur < Phosphorus < Silicon < Aluminum < Magnesium < Sodium.
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संबंधित प्रश्न
Give the trends in atomic size on moving across the period left to right.
Fill in the blank:
On moving across a period from right to left in the periodic table, the atomic size of the atom ___________.
Arrange the following as per the instruction given in the bracket
Na, K, Li (Increasing atomic size)
On moving from left to right in a periodic table, the size of the atom ______.
Atomic radius is expressed in the unit ______.
While going from top to bottom in a group the atomic radius ______.
Write scientific reason.
In same period, boron and oxygen elements have different atomic size.
An element X has mass number 40 and contains 21 neutrons in its atom. To which group of the Periodic Table does it belong?
Elements have been arranged in the following sequence on the basis of their increasing atomic masses.
| F, | Na, | Mg, | Al, | Si, | P, | S, | Cl, | Ar, | K |
- Pick two sets of elements which have similar properties.
- The given sequence represents which law of classification of elements?
Arrange the following in order of increasing radii:
N, O, P
Explain your choice.
