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प्रश्न
Give reason for the following:
Argon atom is bigger than chlorine atom.
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उत्तर
Since Argon has stable octet configuration, so due to the inter- electronic repulsions the effect of nuclear pull over the valence shell electrons cannot be seen which results in the bigger size.
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संबंधित प्रश्न
Answer the following in respect of element `31/15 P `
Give its formula with chlorine?
Fill in the blank:
On moving across a period from right to left in the periodic table, the atomic size of the 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?
Among the elements of the second period, Li to Ne, pick out the element with the largest atomic size
Arrange the following as per the instruction given in the bracket
Na, K, Li (Increasing atomic size)
The changes in the properties of elements on moving from left to right across a period of the Periodic Table. For the property, choose the correct answer.
The atomic size:
Which of the following gives the correct increasing order of the atomic radii of O, F and N?
Which one of the following depict the correct representation of atomic radius(r) of an atom?
|
(i) |
(ii) |
|
(iii) |
(iv) |
Atomic number of a few elements are given below
10, 20, 7, 14
- Identify the elements
- Identify the Group number of these elements in the Periodic Table
- Identify the Periods of these elements in the Periodic Table
- What would be the electronic configuration for each of these elements?
- Determine the valency of these elements
Give reason for the following:
The size of a Cl− ion is greater than the size of a Cl atom.
