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प्रश्न
Arrange the elements of second and third periods in increasing order of their atomic size (excluding noble gases).
उत्तर
Second Period: Fluorine < Oxygen < Nitrogen < Carbon < Boron < Beryllium < Lithium.
Third Period: Chlorine < Sulphur < Phosphorus < Silicon < Aluminum < Magnesium < Sodium.
संबंधित प्रश्न
Which is greater in size an atom or a cation?
Which is greater in size Fe2+ or Fe3+?
Give reasons for the following:
The size of the anion is greater than the size of the parent atom.
Study the radius of the element given below and answer the following questions.
| elements | K | Na | Rb | Cs | Li |
| Atomic radius (pm) | 231 | 186 | 244 | 262 | 151 |
a) Which of the above elements have the smallest atom?
b) In which group of the modern periodic table the above element are belongs?
c) What is the periodic trend observed in the variation of atomic radii down a group?
The size of an atom is indicated by its _______.
Nanometer unit is used to measure atomic radius.
Moving from left to right, the size of the atom decreases.
The diagram below shows part of the periodic table.
- Which elements would react together to form covalent compounds?
- Between the two elements W and Z, which will have a bigger atomic radius? Why?
Arrange the following as per instruction given in the bracket.
Mg, Cl, Na, S, Si (decreasing order of atomic size)
Arrange the following in order of increasing radii:
N, O, P
Explain your choice.
