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Question
Arrange the elements of second and third periods in increasing order of their atomic size (excluding noble gases).
Solution
Second Period: Fluorine < Oxygen < Nitrogen < Carbon < Boron < Beryllium < Lithium.
Third Period: Chlorine < Sulphur < Phosphorus < Silicon < Aluminum < Magnesium < Sodium.
RELATED QUESTIONS
Answer the following in respect of element `31/15 P `
Is it a reducing agent or oxidizing agent?
Answer the following in respect of element `31/15 P `
Give its formula with chlorine?
What do you understand by atomic size? State its unit?
Fill in the blank:
On moving across a period from right to left in the periodic table, the atomic size of the atom ___________.
Give scientific reasons for the following:
Atomic radius goes on decreasing while going from left to right in a period.
Atomic radius is expressed in the unit _______.
The size of an atom depends on the number of valence electrons.
Write an Explanation.
Atomic radius
Which of the following are the characteristics of isotopes of an element?
- Isotopes of an element have same atomic masses
- Isotopes of an element have same atomic number
- Isotopes of an element show same physical properties
- Isotopes of an element show same chemical properties
Arrange the following in order of increasing radii:
N, O, P
Explain your choice.
