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Question
Give reason for the following:
Argon atom is bigger than chlorine atom.
Solution
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.
RELATED QUESTIONS
Answer the following in respect of element `31/15 P`
Give its electronic configuration
Write the name and symbol of the element from the description.
The atom having the smallest size.
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?
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Arrange the following as per the instruction given in the bracket.
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The atomic size:
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When an atom of iodine becomes an iodine ion (I–) the radius will ______
Which one of the following depict the correct representation of atomic radius(r) of an atom?
|
(i) |
(ii) |
|
(iii) |
(iv) |
- Electropositive nature of the element(s) increases down the group and decreases across the period
- Electronegativity of the element decreases down the group and increases across the period
- Atomic size increases down the group and decreases across a period (left to right)
- Metallic character increases down the group and decreases across a period.
On the basis of the above trends of the Periodic Table, answer the following about the elements with atomic numbers 3 to 9.
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